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Article / Updated 05-04-2022
How to mow a lawn or grass the right way is one of the most important practices in keeping your lawn healthy. Grasses are like most plants — if you clip off the growing points (for grass, it's in the crown, where the new leaves develop), the plants branch out and become denser, which in this case, turns thousands of individual grass plants into a tightly woven turf or a lawn. If you didn't mow at all, your yard would look more like a prairie than a lawn. But the mere act of mowing isn't what makes a lawn look good. Mowing height and mowing frequency determine how healthy and attractive your lawn looks. After all, cutting a lawn is stressful for the grass. The leaves make the food for the roots — and how would you like it if someone kept cutting off your food? Height does count when you mow a lawn Most grasses have a range of recommended mowing heights. Stay at the upper end of that range when the lawn is under stressful conditions, such as hot weather or drought, or if you have a shady lawn. In cooler weather, you can cut the grass a little lower. Follow the one-third rule. For a thriving lawn, never cut away more than one-third of the grass blade in any one mowing. If the grass "gets ahead of you" because of wet weather or your busy schedule, move up the cutting height of your mower to the highest possible setting and mow. If clippings are too long and heavy, even at that cutting height, catch them with the bagging unit or clean up after mowing with a leaf rake. Then move the cutting height back to your normal range and cut the lawn again a few days after that first mowing. Table 1 shows suggested mowing heights for different grass types. Table 1: Ideal Mowing Heights Grass type Height Bahia grass; fescue, tall; blue grama; buffalo grass 2 to 3 inches Bent grass 1/4 to 1 inch Bermuda grass, common 3/4 to 1-1/2 inches Bermuda grass, hybrid 1/2 to 1 inch Centipede grass; zoysia grass* 1 to 2 inches Fescue, fine; St. Augustine grass 1-1/2 to 2-1/2 inches Kentucky bluegrass 1-3/4 to 2-1/2 inches Ryegrass, annual and perennial 1-1/2 to 2 inches *You can mow some newer, dwarf varieties lower. Edging and trimming are the finishing touches of mowing, kind of like getting a shave after you've had a haircut. Edging and trimming are pretty close to being the same thing. Some tools are called edgers because they're designed to trim the lawn along a hard surface like a driveway or sidewalk. Edgers cut a nice clean edge, but leave some dirt and grass debris that you need to clean up. On the other hand, you can use trimmers anywhere — along a hard surface, in tight spaces, next to planting beds, and so on. Trimmers also leave some clippings on paths and driveways that you need to sweep up. Never put grass clippings in a plastic bag and send them off to the dump. (In some areas, sending grass clippings to the dump is illegal.) Grass clippings are valuable organic matter, chock-full of nitrogen and other nutrients. As long as you mow often enough to remove no more than one third of the grass blade, the easiest thing to do is just to leave clippings on the lawn. The pieces break down quickly and reduce the amount of fertilizer you have to use by as much as 25 percent. And research has proven that the clippings don't cause thatch to build up. Lawn mowing safety when you mow a lawn Every year, hundreds, maybe even thousands, of people get injured when using lawn mowers. Power lawn mowers can be dangerous even when used properly. Be proactive when it comes to safety and follow these tips to avoid injuries: Know the equipment. Read the owner's manual. Become familiar with all the safety features and don't disconnect any of them. Keep all nuts and bolts properly tightened. Never pull a walking mower. Check the lawn before mowing and wear proper clothing. Pick up any rocks or debris. Heavy shoes and long pants provide the best protection from flying debris. If you're using a reel mower, don't wear loose clothing. Protect your hearing. Doing yard work can get pretty noisy. In addition to the lawn mower, high-decibel noise comes from trimmers, edgers, and blowers. Use earplugs or earmuff-type hearing protection. Keep pets and children away from the lawn as you mow. Don't let children operate a lawn mower unless they're strong enough, responsible, and understand all the operating and safety features. Even then, supervise them. Never give a young child a ride on a ride-on mower. Sudden stops, flying objects, or an excited child can spell disaster. Be careful when fueling. Stop the mower and let the engine cool for 10 minutes before fueling. Never fill the tank with the mower on the lawn. Avoid spills by using a gas can with an adequate pouring spout. Clean up spills immediately and put the used rags in a covered metal can. (Gasoline-soaked rags are a fire hazard.) Turn off the mower. Never leave the mower running unattended, or work on a motor that is running. Turn off the power when you cross nongrass areas. Be careful on hills. Steep slopes are always dangerous because a mower can flip over or go out of control. Plant a ground cover other than turf in these areas. On gentle slopes, mow across the slope, not up and down. Use a walk-behind mower. Lawn mowers — a tree's worst enemy Repeatedly banging a mower against a tree trunk or whipping it senseless with a weed whip each week can seriously damage the bark and the sensitive tissues underneath. The damage can restrict the growth of young trees to the point where the base of the trunk is so weak and girdled that the tree just snaps off in the slightest wind. To protect the tree, leave a ring of grassless soil at least 3 feet wide around the trunk. Put in a nice brick or stone edging around the outside. Better yet, cover the open soil with a thick layer (3 to 6 inches deep) of organic mulch, such as compost or bark. (Keep the mulch a few inches away from the base of the tree.) You can also go to a garden center to buy trunk protectors, plastic sleeves that encircle the trunk, if you have to have the grass right up against the tree.
View ArticleCheat Sheet / Updated 04-27-2022
Picking the perfect rose for your garden involves finding a hardy plant for your growing zone (based on climate), deciding on a type of rose, and following a plan for rose care. Know your rose terminology and the most popular roses, and you'll sound like a gardening guru.
View Cheat SheetCheat Sheet / Updated 04-18-2022
Gardening in Canada presents specific challenges due to our cold climate and short growing season. This cheat sheet offers tips for getting the most out of your Canadian garden. Start by checking the frost dates in your region and consult some of the many online gardening resources that are available. Protect your perennials through the winter and choose the best grasses for Canada’s climate to maintain a beautiful, thriving lawn and garden year after year. Read on to see how.
View Cheat SheetCheat Sheet / Updated 04-08-2022
Gardening sustainably just makes sense in our fragile world. Doing it in your own backyard takes a little effort, but more and more gardeners are finding that every step is worth it to create a sustainable garden that not only looks after your plants and you, but also helps the whole planet.
View Cheat SheetCheat Sheet / Updated 04-07-2022
After you decide that your home is a good candidate for wind power, you need to understand the basic parts of wind-electric systems and how they fit together. In addition, you need to evaluate how much energy your home needs and how much wind your site actually gets — a realistic wind resource assessment is key. You also want to make sure to steer clear of "too good to be true" energy estimates from the pros who want to sell you their goods and services.
View Cheat SheetCheat Sheet / Updated 04-01-2022
To have the garden of your dreams, make sure you pick the right plants for your hardiness zone and select the right fertilizers for your plants. If your garden is shady, this Cheat Sheet offers a list of plants made for the shade. When you're planning and measuring your garden use the handy conversion chart for metric and standard measurements.
View Cheat SheetArticle / Updated 03-31-2022
Gardeners in northern regions deal with warm summers and cold winters. But there is work to do in your garden through most of the year. Here is a month-by-month guide that keeps you in the gardening frame of mind, even through the dreary months of winter. Winter January: Settle next to the fire with a stack of new seed catalogs. As you order seeds, think about where you want to plant new annuals and what color combinations you find appealing. February: Prepare a space for starting seeds. Clear an area in a sunny window or set up fluorescent lights for seedlings to sprout and grow. Buy seed-starting trays or use old trays that you’ve cleaned with a dilute bleach solution and rinsed well. Providing bottom heat maintains an even, warm soil temperature and improves germination. March: March through mid-April is seed-starting time in cold climates. Plan a seeding schedule — essential in short-season climates where you want to make every day count. Start by figuring when you want to move plants into the ground, and work backward to calculate the best time to sow the seeds indoors — four to eight weeks ahead of transplanting time, in most cases. Also see these month-by-month chores for gardeners in other U.S. regions: southern; Pacific Northwest; desert at extreme altitudes. Spring April: You still have time to sow seeds indoors for transplanting next month. If your last-frost date falls around Memorial Day, sow seeds for all annuals, except fast-growing, tender plants (cosmos and zinnias, for example), by mid-April. If you live in warmer areas with milder winters, you can start sowing seeds of hardy annuals directly into the ground a couple weeks before the last frost date in their region. If it’s still cold in April where you live, wait until next month to direct-sow seeds. If you plant nothing else, sow sweet pea seeds as soon as the ground can be worked. Depending on your region, late April or May is the time to lay out beds and prepare the soil. Adjust the soil pH based on soil tests done in the fall. Amend the soil with a 2- or 3-inch layer of organic matter and a complete fertilizer. May: Early May is generally the best time to plant hardy annuals (seeds or transplants) in most areas — 10 to 14 days before the last frost is usually safe. Check local garden centers for ready-to-plant, cool-season annuals. Look for stocky, green plants when shopping at garden centers. Avoid plants with dead lower leaves and brown, overcrowded roots, as well as plants that are already flowering. Start transplanting tender annuals, such as impatiens, lobelia, and petunias, into the ground when frost danger has passed, the soil and air have warmed up, and the nights are no longer cold. June: Continue planting tender annuals, and remember that newly planted seeds and transplants are vulnerable. Gardeners in cold, mountainous areas often wait until June 10 to plant the most tender plants, such as impatiens. Water if June is dry. Mulch to conserve water and slow weed growth. Pull off or pinch back fading blooms of cool-season annuals to extend their season of color. July: Plants require extra water and nutrients to keep them at their peak in hot, dry weather. Container-bound plants, particularly, suffer from heat stress and usually need daily watering if they’re located in the sun. Container gardens quickly deplete soil nutrients; feed window boxes and pots with a liquid fertilizer every couple weeks. Continue feeding annuals to promote steady growth for the remainder of the summer. Stake taller plants. Deadhead flowers regularly. In hot climates, cool-season annuals probably have peaked, so pull them out. August: In northern regions where the growing season is 90 to 110 days long, late July through early August is the garden’s peak. Continue to deadhead, water, and weed. Containers still need to be fertilized. Tidy beds and containers by pulling out plants that have passed their peak. Harvest flowers for drying and enjoy fresh-cut bouquets Autumn to Winter September: Be ready with row covers or blankets if an early frost is predicted and you still have tender plants in bloom. Use pots of asters, calendulas, and flowering kale to replace frosted or dying annuals. Collect seed pods, dried flowers, and grasses to make arrangements. October: Pull out dead plants and add them to your compost pile. Take soil samples in the fall to know how to amend soil next spring. Use the results of the soil tests to gauge any adjustments that you need to make in soil pH and fertility. November through December: Sharpen, clean, and oil your tools. Keep a record of any extra seed you have. Store the extra seed in an airtight container in a cool location; add packets of silica gel to absorb any moisture in the container. Build your own window boxes or trellises for next year. Build a cold frame for growing and hardening off your transplants. Seek inspiration for next year’s garden in books and magazines.
View ArticleArticle / Updated 03-31-2022
The Southwest deserts encompass mild-winter climates of the low-elevation deserts of Arizona and California. (The mountains of Arizona and New Mexico, as well as west Texas, have a more typical cold-winter, summer-only season for growing annuals.) Glory time for annuals is late winter and early spring in low-desert Arizona, primarily around Phoenix and Tucson, and California’s Coachella Valley. This calendar starts in September to reflect the true beginning of the planting season: If you live in a temperate, high-altitude climate, follow the calendar recommendations for Northern gardeners. September: Prepare planting beds. Midmonth or later, set out nursery transplants for winter and spring bloom — maybe even by Christmas. Provide temporary shade during the hottest weather. Early in the month, you still have time to start annual flower seeds in flats or pots to transplant into the ground later in the fall. If summer annuals are still going strong, keep them watered thoroughly and fertilize every two or four weeks. October: Continue to set out annuals for blooms before the end of the year. Water thoroughly after planting and provide temporary shade during extra-hot spells. Sow seeds of low-spreading annuals to cover bare spots in bulb beds. If your timing is good, everything will bloom all at once. Start regular feeding a few weeks after planting annuals. November: You still have time to plant for winter and spring bloom. Cooler weather encourages a new crop of aphids, plus slugs and snails. December: You still have time to plant seedlings. Watch your soil for signs of dryness, and water as needed. January: After the holidays, nurseries stock up with blooming annuals in small pots. Shop for color that you can use right away in pots or in gaps in planting beds. Watch for aphids and take steps to control them. Pull or hoe seasonal weeds, or mulch beds with a layer of organic matter to smother weeds and weed seeds. February: Cool-season annuals are peaking this month in the low desert. Maintain top performance by removing dead flowers, watering thoroughly, and feeding regularly. Start seeds of warm-season annuals indoors to transplant into the garden in four to six weeks. Prepare beds for spring planting. March: In the low desert, transplant warm-season annuals. Pinch back at planting time and snip off flowers to encourage bushier growth. A few weeks after planting, fertilize young annuals and begin a regular (bi-weekly or monthly) fertilizing schedule. April: Plant heat-loving annuals, such as marigolds and zinnias. Adjust the frequency of sprinkler systems as the weather heats up. May: Spring flowers are winding down. Pull them out and replace them with heat-lovers. Pinch tips of young annuals for bushier growth. June: This is your last chance to plant for summer blooms. Make sure that you choose from among the true heat-lovers: globe amaranth, salvia, and the most reliable of all, vinca rosea. July and August: Water and mulch. You don’t do any planting at this time of year. Feed summer annuals regularly. Remove faded flowers.
View ArticleArticle / Updated 03-31-2022
The best and most refined of organic matters is compost, which is organic matter and/or manures that have decomposed until they resemble loamy soil. Thoroughly decomposed compost contains lots of humus — the beneficial, soil-improving material your plants need. Whether the original source was grass clippings, sawdust, animal manure, or vegetable scraps from your kitchen, all organic matter eventually becomes compost. Making your own compost is probably the simplest way to ensure high quality compost and save some money. It's really not as complicated as you may think: The many commercial composting bins and containers on the market make it a mess-free and hassle-free process. A well-constructed compost pile — built with the proper dimensions and maintained correctly — heats up fast; decomposes uniformly and quickly; kills many diseases, insects, and weed seeds; doesn't smell; and is easy to turn and maintain. Conversely, a pile just thrown together rarely heats up and, therefore, takes longer to decompose. This type of cold composting doesn't kill any diseases, insects, or weed seeds; may smell bad; and definitely looks messy. Containing your compost pile makes it look neater, helps you maintain the correct moisture, and prevents animals from getting into it. You can build your own, as shown in Figure 1, or buy a commercial home composting unit. Figure 1: Build a simple wooden bin to hold your compost pile. The advantages of a commercial composter include the availability of a wide range of attractive sizes and shapes and ease of use. Choose from box-shaped plastic and wooden bins and barrels or elevated and easy-to-turn tumblers, as shown in Figure 2. Store-bought bins are costly, however, and produce only small quantities of compost at a time, especially compared to a homemade bin that's built from scrap lumber or wire. Figure 2: Commercial composters help you make compost yourself. How to build a good compost pile Here's how you build a good compost pile: Choose a shady location. Make it out of the way, but still within view so that you don't forget about the pile. The soil under it should be well drained. Make a bin. Create a wire cylinder that's 3- to 4-feet in diameter or build a three-sided box (similar to the one in Figure 1), that's 4 to 5-feet high and wide. Add brown materials. Add a 6-inch layer of "brown" organic matter — such as hay, straw, old leaves, and sawdust — to the bottom of the container. Add green materials. Add a 2- to 3-inch layer of "green" organic matter, such as green grass clippings, manure, table scraps, or even high-nitrogen fertilizer, such as cottonseed meal, on top of the brown layer. Repeat these layers. Water each layer as you go, until the pile is 4 to 5-feet tall and fills the bin. A smaller pile won't heat up well and a larger pile can be difficult to manage. Within two days, mix the layers together thoroughly. Particle size should be varied, smaller particles hasten decomposition. Cover the pile with a tarp. This keeps rain away and preserves moisture. If the pile gets too soggy or too dry, it won't heat up. What to add, and what not to add Not all organic matter is good for the compost pile. Following, is a look at what to add to a pile, including ratios, and what not to add. What to add to the pile or composter What you put in the compost pile is up to you — just remember that it needs to be from an organic material. Here's a short list of possibilities: Hay, straw, pine needles Leaves Kitchen scraps (egg shells, old bread, vegetable and fruit scraps) Animal manure, except for dog, cat, pig, or human Old vegetables, flowers, or trimmings from trees and shrubs Sawdust Wood chips Weeds Shredded black-and-white newspaper. (In the past, color printing used heavy metals in the ink. Most color printing now uses soy-based inks, but it's better to avoid them in the garden altogether to be on the safe side.) What not to add Some items don't belong in your compost pile. While hot compost piles can kill off many diseases, weed seeds, and insects, it's not a sure thing, and some of these unpleasant guests may survive to invade your garden again. Certain materials can also invite unwanted wildlife to the pile or spread human diseases. Avoid adding the following to your compost bin: Kitchen scraps like meats, oils, fish, dairy products, and bones. They attract unwanted animals, such as rats and raccoons, to the pile. Weeds that have gone to seed or that spread by their roots, such as quackgrass Diseased or insect-infested vegetable or flower plants Herbicide-treated grass clippings or weeds Dog, cat, or pig feces Ratios for adding materials to the compost pile In composting corners, you often hear about the carbon to nitrogen (C/N) ratio. Basically, all organic matter can be divided into carbon-rich (brown stuff) and nitrogen-rich (green stuff) materials. Using the right mixture of brown to green stuff when building a compost pile encourages the pile to heat up and decompose efficiently. Although nearly any combination of organic materials eventually decomposes, for the fastest and most efficient compost pile in town, strike the correct balance (C/N ratio) between the two types of material — usually 25 to 1 (that is, 25 parts carbon to 1 part nitrogen). Table 1 shows which common compost materials are high in carbon and which materials are high in nitrogen. Notice that the softer materials, such as fresh grass clippings, tend to be higher in nitrogen than hard materials, such as sawdust. Mix these together to form a pile with an average C/N ratio of 25-to-1 to 30-to-1, and you'll be well on your way to beautiful compost. Use the following carbon/nitrogen ratios as guidelines. Actual ratios vary depending on the sources of the materials and other factors. And speaking of sources — be sure that your compost materials haven't been contaminated with pesticides or other chemicals. Material and C/N Ratio Table scraps, 15:1 Grass clippings, 19:1 Old manure, 20:1 Fresh alfalfa hay, 12:1 Fruit waste, 25:1 Corn stalks, 60:1 Old leaves, 80:1 Straw, 80:1 Paper, 170:1 Sawdust, 500:1 Wood, 700:1 Quick and easy compost recipes To make the most compost in the shortest amount of time, try some of these proven recipes. For each recipe, mix the ingredients thoroughly and follow the directions in the next section. Depending on weather and compost ingredients, you should have ready-to-use compost within one to two months. Recipe #1: Four parts kitchen scraps from fruits and vegetables, 2 parts chicken or cow manure, 1 part shredded newspaper (black ink only), and 1 part shredded dry leaves. Recipe #2: Two parts kitchen scraps, 1 part chicken manure, and 1 part shredded leaves. Recipe #3: Two parts grass clippings, 1 part chicken manure, and 1 part shredded leaves. Keeping your compost pile happy A hot pile is a happy pile. If you follow the method of just throwing everything together, the pile will rarely heat up. If you follow the method of building the pile carefully with a balanced C/N ratio, the pile will start to cook within a week. Now you need to keep it cooking. Here's the procedure: Keep the pile moist by periodically watering it. Dig into the pile about 1 foot to see if it's moist. If not, water the pile thoroughly, but not so that it's soggy. The pile needs air, too, and adding too much water removes air spaces. If you built the pile with moist ingredients, such as kitchen scraps, it won't need watering at first. Turn the pile when it cools down. Using a garden fork, remove the outside layers and put them aside. Remove the inside layers into another pile and then switch. Place the outside layers in the center of the new pile and the inside layers along the outside of the new pile. Let it cook again. How hot it gets and how long it cooks depends on the ratio of C/N materials in the pile and whether you have the correct moisture levels. When it's cool, turn it again. You should have finished compost after two to three turnings. The finished product should be cool, crumbly, dark colored, and earthy smelling. Sometimes, a compost pile never heats up, smells bad, or contains pieces of undecomposed materials. Chances are that one of the following conditions occurred: The pile was too wet or dry. You added too many carbon materials and not enough nitrogen materials. The pieces of material were too big or packed together. Shred leaves, branches, and pieces of wood to decompose more quickly. The pile was too small. You can find lots of compost aids on the market. Bioactivators — packages of concentrated microbes — are one of the most popular because they can speed the decomposition process. These microbes occur naturally, however, and many are already present in a well-constructed compost pile. Save your money and use microbe-rich compost materials instead.
View ArticleArticle / Updated 03-30-2022
Insect and disease killers that come from plant extracts are called botanical pesticides or botanicals. Although derived from natural sources, botanicals are not necessarily safer or less toxic to non-pest insects, humans, and animals than synthetically derived pesticides. In fact, most botanicals are broad-spectrum insecticides, which kill both good and bad bugs indiscriminately. Some botanicals cause allergic reactions in people, others are highly toxic to fish and animals, and some may even cause cancer. All pesticides — including botanicals — should be used only as a last resort after thoroughly reading the label on the package. The pesticides in this section are listed from least to most toxic to humans. Hot pepper wax and powder: The chemical capsaicin causes the heat in hot peppers and it's the active ingredient in these useful botanical products. In low doses, such as found in ready-to-use sprays and dusts, hot pepper wax repels most common insect pests from vegetables and ornamental plants. It doesn't cause the fruit or vegetables to become spicy hot, but instead stays on the surface of the plant where it remains effective for up to three weeks. Stronger commercial formulations kill insects as well as repel them. Hot pepper wax is even reportedly effective in repelling rabbits and tree squirrels. Neem: This pesticide is made from the seeds of the tropical neem tree, Azadirachta indica, and it comes in two forms — azadirachtin solution and neem oil. Unlike the other botanical insecticides in this section, neem does not poison insects outright. Instead, when insects eat the active ingredient, it interrupts their ability to develop and grow to their next life stage or lay eggs. It also deters insects from feeding and is effective against aphids, thrips, fungus gnats, caterpillars, beetles, leafminers, and others. Amazingly, plants can absorb neem so that any insects that feed on them may be killed or deterred from feeding. Neem breaks down in the presence of sun and soil within a week or so. To discourage insects from eating your plants, spray neem before you see a large infestation. The product Safer BioNeem contains azadirachtin solution. Neem oil, the other seed extract, also works against some plant leaf diseases, such as black spot on roses, powdery mildew, and rust diseases. Mix the syrupy solution with a soapy emulsifier to help it spread and stick to the plants. The neem oil products called Rose Defense and Fruit & Vegetable Defense (from Green Light) control insects, mites, and leaf diseases. Pyrethrins: These insecticidal compounds occur naturally in the flowers of some species of chrysanthemum plants. The toxins penetrate the insects' nervous system, quickly causing paralysis. In high enough doses or in combination with other pesticides, the insects die. Powerful synthetic compounds that imitate the natural chrysanthemum compounds are called pyrethroids. Pyrethroids are not approved for use in organic farms and gardens. Also avoid any pyrethrins that list "piperonyl butoxoid" on the label. This additive is not approved for organic use. The compound breaks down rapidly when exposed to sun and air and becomes less effective if stored for longer than one year. Many commercial products contain pyrethrins. Although relatively harmless to humans, pyrethrins are very highly toxic to fish and bees and moderately toxic to birds. It kills both beneficial and pest insects. To keep bees safe, spray pyrethrins in the evening after bees have returned to their hives for the night and avoid spraying blooming plants. Ryania: This pesticide comes from the tropical Ryania speciosa plant. Although it controls fruit and codling moths, corn earworm, European corn borer, and citrus thrips, it is also moderately toxic to humans, fish, and birds. It is very toxic to dogs. Seek other botanical pesticides before considering ryania. Sabadilla: Made from the seeds of a tropical plant, sabadilla is a powerful broad-spectrum insect killer. It's especially useful for controlling thrips, aphids, flea beetles, and tarnished plant bugs, but it also kills bees and other beneficial insects, and some people have severe allergic reactions to the chemical. Use it only as a last resort.
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