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Bulb Gardening: Choosing a Site, Establishing a Purpose

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Robert J. Dolezal

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The great thing about bulbs is that they truly have a place in every garden: in containers and window boxes, in small-space gardens, in island beds, in borders, as edges to paths and fences, to divide and augment plantings of flowering shrubs, as a necklace around the base of a tree, and in a hundred other places. Choosing the site for planting your bulb garden is usually the easy part. Of course, once you know where you want to plant, then comes the tough part: figuring out what to put there.

Four types of tulips
Even a small corner bed with a grouping of four distinct tulips makes a beautiful, bold statement in a garden.
Photo Credit: ©2002 Dolezal Publishing/Donna Krischan
Tulip border planting
A large mass planting of tulips takes time and effort to plant in the fall, but when that bright bulb border explodes with color come spring, you’ll know all the planning and work was worth it!
Photo Credit: ©2002 Dolezal Publishing/Donna Krischan
Tulips and lighting
As you plan your bulb garden, keep in mind some practical needs, such as including low-voltage pathway lighting for safety.
Photo Credit: ©2002 Dolezal Publishing/John M. Rickard
Tulips along a path
The hard edges of a herringbone brick path and its low formal hedges can be softened by using tall bulbs to create a casual and undulating form that colorfully accents the evergreen shrubs that frame it.
Photo Credit: ©2002 Dolezal Publishing/John M. Rickard

Picking the best bulbs for your garden starts by determining the conditions in your garden so you’ll know which ones will perform best. Bulb species are native to all kinds of lands with a wide range of climate conditions. So first identify your USDA Hardiness Zone. (The USDA has divided the country into 11 zones according to the average lowest temperatures they experience.) Most bulb packages list the coldest USDA Hardiness Zone in which they’ll grow.

Next, consider your climate. Your garden likely experiences one of three: cold, freezing winters and moist, warm summers; mild, wet winters and hot, dry summers; or generally mild winters with humid, wet summers. Lucky for home gardeners everywhere, there are bulbs that are well-suited to each of these conditions.

And don’t forget to check your site for various microclimates. Wind and sun exposure, slopes and elevation, and nearby structures can limit sunlight or reflect heat. Microclimate conditions can cause one part of your yard to differ from another. Ask experienced staff at your local garden center, nursery or Cooperative Extension for advice regarding conditions in your area.

Be sure to take into consideration the amount of sunlight your designated planting area receives, as well as the time of year the bulbs will grow. Do existing trees and structures cast shade? And if so, is it full shade or filtered? Will the situation change when trees and shrubs lose their leaves?

Don’t forget to check the condition of your soil, too. Has the bed been used to grow other plants, lain fallow for a few years, or was the site disturbed when your home was constructed? Is the soil dense and compacted, or loose and sandy? Will you need to add fertilizers and amendments to bolster its nutrients and correct its acid-alkaline balance (or pH)?

Other things to consider include whether you’ll plant your bulbs amid other annual and perennial flowers, or woody shrubs and groundcovers. If such combo planting is in your plan, be sure to consider the fertilizer, watering and other requirements of the other plants, and whether or not they’ll be disturbed when you lift your tulips, daffodils and other bulbs after they bloom. Considering all of these issues will help you determine which types of bulbs will work best for your gardening situation.

But don’t stop there. Now is also a good time to reflect on your goals and objectives for your bulb plantings. While your overall purpose may be to beautify your landscape in springtime before trees bud with new leaves and annuals begin blooming, you may have other considerations worth exploring.

If you garden indoors or in a small space such as a courtyard or on a patio or deck – or perhaps you just have a small area to devote to bulbs – you should plan carefully to achieve the effect you desire. Container gardens and structured landscapes are great spots for geometric groupings of containers or plantings set off by raised beds or other well-defined edges. Consider strong, contrasting color palettes bordered with complementary colors.

In larger settings, you can create a showcase in a bed or border devoted to bulbs, or you might prefer flowing naturalized plantings that re-create the look of an informal garden. As you plan, try to picture your site using ideas from your favorite gardens, books, magazines, television programs – anything that inspires you.

Of course, your garden may already suggest a plan by its shape, layout, structures or overall design. Paths, for instance, may need border plantings to line their edges, or a glade of silver birch may call for daffodils in a faux meadow. Your bulb planting will best fit your site when it matches and integrates with the setting. Choose colors, plants and layouts that are rustic, casual, structured or formal, depending on your home’s architectural style.

And don’t forget any secondary objectives: Should the bulbs hide raw soil before a deciduous groundcover develops leaves in spring? Has water remained standing on the site in the past, creating a perfect spot for moisture-loving bulbs such as flag iris? Will your tall plantings of dahlia and gladiolus mask a fence, water spigot or electrical fixture?

Yes, the easy part of bulb gardening is picking the spot (or spots) to plant your bulbs. But even easier than that is enjoying their beauty once they’re blooming in the garden – making all the hard work in between more than worth it!

Warnings
  • Bulbs do best in well-drained soil, rich in decomposed organic matter. Dense or slow-draining soil can cause fungal disease and decay. If puddles form after a rain or watering at the planned site, its best to address drainage issues by amending the soil before planting, since bulbs quickly rot in continually moist soil.
  • If a spring bulb planting is created to help disguise an unattractive element of the landscape, remember that most spring bulbs have a rather short span of bloom. A later-blooming perennial grass or some annual bedding plants will likely be needed to pick up the task for the later part of the season.
Facts
  • Timing is everything. When a spring-flowering tree such as star magnolia or flowering plum comes into bloom, having a swath of complementary blooming bulbs at its base turns the existing beauty into the spectacular. Another great place to plant spring bulbs is under deciduous trees that will not yet have put out their full show of summer leaves, leaving enough filtered light to warm the soil and greet the flowering bulbs’ rising shoots and buds.
  • Bulbs – whether mixed with other flowers or in a mass planting – can draw the eye and highlight a garden feature such as a statue, fountain or birdbath, accessorizing it into an attractive focal point.
Share
  • Come to The Garden Party and share your bulb plantings with the rest of our Learn2Grow community. Post pictures of your blooming beauties, write a blog, or connect with our gardening experts and other home gardeners nationwide to share more bulb-growing tips and ideas.
 
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