Crocuses are some of the earliest flowers every spring, often blooming even before all of the snow is melted away. They come in a variety of colors: white, yellow, pink, purple, lilac; they are low-growing with cup-shaped flowers borne close to the ground, with grasslike dark-green leaves. How to grow crocuses? It’s easy.
Choose a Location
As with any type of plant, crocuses have a preferred location where they will thrive. They do best in sandy, gritty, well-drained soil that gets full sun or partial shade. They can be used in borders, beds, woodland areas, or rock gardens.
Crocuses grow from corms, which resemble bulbs; the difference between a corm and a bulb lies in its internal structure. Bulbs are layered like an onion, while corms are solid. A corm is actually a modified stem made up of stored nutrients. It has a tip or bud on the top from which the leaves and flowers will sprout. When buying corms, examine them and reject any that appear damaged or have bruises, soft spots or mold; the outer brown papery skin (tunic) should be intact. A good-quality corm should feel solid and heavy for its size.
Preparing the Soil
Not much preparation is needed for crocuses. If your soil is very clayey, add in some sand. Mix in a handful of bonemeal and some aged manure or compost as you dig the holes for the corms.
Planting the Corms
To plant your crocuses, you can either dig an individual hole for each corm, dig a trench in which to plant a row of corms, or dig up a bed and plant the corms at random intervals. Each corm should be planted at a depth of 3 to 4 inches; make sure that the tip or bud is pointing upward. For varieties that will bloom in late winter and early spring, plant them in autumn. Fall-blooming varieties can be planted in mid-to-late summer.