Success with Spring Bulbs: Expert Tips for a Spectacular Display

Daffodils are especially nice when planted in masses. Don’t be skimpy.

Dutch bulb growers are masters of seductive photography—close-ups with glistening dew, perfectly timed color-coordinated splendor, acres of red tulips, rivers of blue hyacinths, woodlands carpeted with crocuses. No gardener can resist. Thousands of naturalized bulbs fill my yard, yet those images still captivate me, and I add more every year. Each humble brown bulb is a surprise package of color and fragrance—a floral time bomb ticking toward spring.

No matter your garden size, there’s room for spring bulbs. Here are tips for success:

Bigger Is Better

Bulbs are sold everywhere—grocery stores, big-box retailers. Prices may be low, but most are undersized. With bulbs, bigger means bigger blooms next spring and a higher chance of multi-year flowering. Dutch bulbs are graded by circumference in centimeters; reputable suppliers list sizes. Only the largest, highest-quality bulbs earn “top size.” Top-size tulips must be at least 12 cm. Discount bulbs are B-grade, failing the top-size standard.

Quality Matters

Next year’s flower is fully formed inside the bulb. Rough handling damages it. Bulbs dry out if exposed to heat, dry air, light; too much moisture causes mold or mush. Choose firm bulbs free of large blemishes or scars. A spot or two of mold is okay; more indicates poor storage. The bulb should be dormant—little or no root growth. For best results, bulbs should be kept in cold storage with controlled humidity until shipping. That’s why I buy by mail from a direct importer.

Plant With Care

Most bulbs need well-drained soil and full or partial sun. Planting depth matters: measure bulb height and plant three to four times deeper. A 2-inch tulip bulb needs a 6–8 inch hole. Before placing the bulb, loosen soil an inch or two deeper and add granular fertilizer (e.g., All-Purpose Fertilizer).

Don’t Be Stingy

Bulbs look best in close, informal clusters of 3, 5, 7, or 9. Large bulbs (tulips, hyacinths) spaced 5–6 inches apart; small bulbs (crocus, scilla) 1–3 inches apart. If you only have ten tulips, plant two groups of five or one group of ten. Single bulbs or a row of “soldiers” disappoint.

Let the Foliage Ripen

After bloom, remove spent flowers to prevent seed production. Next year’s flower forms in the 3–4 weeks post-bloom. The plant needs its leaves to generate nutrients for that flower. Leave foliage until it yellows and withers, then cut or gently tug away.

Late summer is time to browse bulb catalogs, visit nurseries, or shop online. Spring bulbs must establish roots before soil freezes. Northern gardeners: plant early to mid-fall (not late October). Southern gardeners can wait until early winter.