Choosing Spring Bulbs for Flower Beds and Borders
By The National Gardening Association, Bob Beckstrom, Karan Davis Cutler, Kathleen Fisher, Phillip Giroux, Judy Glattstein, Mike MacCaskey, Bill Marken, Charlie Nardozzi, Sally Roth, Marcia Tatroe, Lance Walheim, and Ann Whitman from Gardening All-in-One For Dummies
Hyacinths, daffodils, and tulips are excellent in spring flower borders. Garden borders, no matter how formal, are less rigid than bedding out designs (where you plant lots of the same things in tight groups). In borders, you generally plant a group of ten bulbs rather than the many more used in a bedding scheme.
A jumbled combination of several different kinds of bulbs is going to look muddy and have a weaker effect than if you plant blocks of a single kind.
Here are some bulbs that look great in beds and borders:
Crown imperial (Fritillaria imperialis) is a stunning addition to the perennial border. At about 3 feet (91 cm) tall, crown imperials really stand out, and the wreath of good-sized orange flowers, topped with a pineapple-like tuft of leaves, is unusual enough to really command attention. Planted singly, crown imperial is like an exclamation point. Three to five of these big bulbs make a strong statement; more is really lavish.
Ornamental onions, Allium species and cultivars, make a great addition to the late spring border. Shorter ones, such as Allium christophii or Allium karataviense are charming with hardy geraniums. Taller ones, such as Allium aflatunense or the Allium giganteum cultivars, are stately with larger perennials and/or ornamental grasses. Because their flowers make such a good show (and the bulbs cost a bit more than tulips and daffodils), groups of three to five make quite a nice display.
Hyacinths are ideal for bedding schemes. Their flowers are arranged in masses on stiff formal spikes that seem tailor-made for formal designs. With soft or deep blue, pale pink to deep red, cool white to creamy yellow to soft orange, you can create patterns or a design of geometric blocks, rhythmic curves, stripes, squares, or circles. The bulbs remain year after year, and while the spike of bloom may be somewhat smaller after the first year, it’s still enough to satisfy all except the most critical gardener.
Daffodils are graceful enough for borders, emphatic enough for bedding. A host of golden daffodils is a sure sign of spring, even if you never memorized Wordsworth’s poem in grade school! Choose larger, taller daffodils for bedding out; they make a more emphatic display than miniature daffodils. Although daffodils have a limited color range — yellow, white, and bicolors of yellow and white, yellow and orange, or white and orange — the difference is enough to be apparent.
Never buy mixtures, for any purpose. Sure, buy several different kinds of daffodils, but don’t mix them within a single group. That way, you can control what’s going where rather than leaving it to random chance.
Tulips are simply fabulous for bedding out. With their riotous range of colors from soft pastels to jewel-tone bright, you can create a carpet of color. Generally, you plant bedding tulips in blocks or groups of a single color. The adjacent group can be a related color for a subtle effect, or strongly contrasting for a more dynamic result. Trickier is interplanting two different tulips for a color-blending effect, say a purple with a softer pink, or a yellow with a peachy apricot. The tulips can be somewhat different in height, but they absolutely must flower simultaneously. You can bed out any of the cultivated varieties (cultivars) of tulips. Avoid the original wild types, however; they just don’t work well in beds.
Tulips flower best the first year you plant them. If you’re striving for a lavish display of bedding tulips, you’ll need to be extravagant. Discard the bulbs that have finished flowering and plant new bulbs each and every year. The method to this madness is that, every year, you get to change the colors and design to suit your fancy.

Gardening Glossary
annuals
Plants that complete their entire life cycle within one growing season. The plant germinates from seed, grows and blooms, and then produces seed and dies.

Gardening Glossary
biennials
A plant that take two growing seasons to complete its life cycle. It germinates and grows leaves and stems in the first year; produces flowers and fruit (seed) in the second, and then dies.

Gardening Glossary
bolt
When a plant flowers or produces seed prematurely.

Gardening Glossary
cold frame
A wooden or concrete block box in which you can grow plants or hold dormant during the cold winter months.

Gardening Glossary
cole crops
A family of vegetables, including broccoli, cabbage, cauliflower, kale, and Brussels sprouts. They thrive in cooler weather.

Gardening Glossary
complete fertilizer
Any fertilizer that contains all three of the primary nutrients, N-P-K (nitrogen, phosphorus, potassium). Phrase is based on regulations governing the fertilizer industry. Does not mean that the fertilizer literally contains everything a plant needs to thrive.

Gardening Glossary
deadheading
The practice of pinching or cutting off spent flowers

Gardening Glossary
evaporative-pad humidifier
A humidifier in which fans blow across a moisture-laden pad that sits in a reservoir of water.

Gardening Glossary
harden off
The process of acclimating plants grown indoors gradually to the brighter light and cooler temperatures of the outside world.

Gardening Glossary
hardiness
The ability of a plant to survive is called its hardiness.

Gardening Glossary
humus
A stable end product of organic-matter decomposition that's believed to increase microbial activity in soil, improve soil structure, and enhance the root development of plants.

Gardening Glossary
Bacillus thuringiensis Bt
An effective bacteria that attacks only the larvae of caterpillar family insects. It is safe to other insects, animals, and humans.

Gardening Glossary
macronutrients
Mineral nutrients that plants need in the largest quantities: nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur.

Gardening Glossary
mulch
Organic or inorganic material placed over the surface of soil, usually directly over the root zone of growing plants. Used to conserve moisture, kill weed seedlings, modify soil temperature, provide attractive covering to garden beds.

Gardening Glossary
organic matter
Once-living stuff like compost, sawdust, animal manure, ground bark, grass clippings, and leaf mold (composted tree leaves). Used to enrich soil and improve soil texture.

Gardening Glossary
perennials
Any plant with a life cycle of three or more years. Herbaceous (non-woody) perennials include flowering plants and herbs, mainly. Woody perennials include trees and shrubs. Longevity depends on the plant and growing conditions.

Gardening Glossary
pH
The measure of soil's acidity. Soil with low pH means it's too acidic; soil with high pH means it's alkaline. Most plants grow best in soil with a pH value between 6.5 and 7.2. Neutral soils measure 7.

Gardening Glossary
photosynthesis
The process through which plants take nutrients from the air and from the water in the soil to produce sugars that fuels the plant's growth.

Gardening Glossary
primary nutrients
Nitrogen, phosphorous, and potassium are the three nutrients plants need in the largest quantities.

Gardening Glossary
root crops
Plants with edible underground roots such as onions, carrots, beets, potatoes, turnips. Most root crops are cold-weather crops.

Gardening Glossary
self-blanching
A type of cauliflower with leaves that naturally curl over the head and exclude light. Requires cool temperatures for leaves to curl effectively.

Gardening Glossary
sets
Small onion bulbs, about 1/2-inch wide, that were started from seed the previous year. Grow onion sets with the pointy end up.

Gardening Glossary
side-dressing
The act of adding a small amount of fertilizer around or "on the side" of plants after they're growing.

Gardening Glossary
succession planting
Planting small, 2-to-4-foot patches of plants every two weeks throughout the growing season so that you can harvest a crop over an extended period of time.

Gardening Glossary
thinning
The act of cutting the least robust seedlings in your garden to give the healthier plants more room to grow.

Gardening Glossary
vining crops
Crops that grow on vines, such as cucumbers, melons, pumpkins, and winter squash. They usually require support (staking, trellising, etc.) to keep them off the ground.