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Description Location
Crocuses form new corms above the old ones each year, and eventually this forces the plant up out of the soil. Therefore, they should be dug up, dried, and replanted every 3-4 years. Do this when the plants are dormant. Mice and other rodents enjoy a good crocus snack whenever they get a chance. Light: Grow crocuses in full sun to partial shade. Moisture: Many (but not all) crocuses come from the Mediterranean region, and are adapted to cool, wet winters and dry summers. These species, which are dormant in summer, may not do well outside in temperate climates with abundant rainfall in summer. They usually do better in containers where they can be kept dry in summer. The accompanying table lists crocuses that are easiest to grow in wet-summer climates, those that require dry summers, and those that can survive in southern gardens. Hardiness: USDA Zones 3-8. Hardiness varies with species and cultivars (see the table). Most Crocuses are quite frost hardy and most do well in cool climates. In warm areas, some crocuses may bloom the first year and never again. Propagation: Cormlets can be divided off the main corm during dormancy. Crocus seeds should be harvested as soon as the seed capsule ripens and before it splits open. Plant the seeds immediately and leave them in containers for two years before planting out. Grown from seed, crocuses will not bloom until their third year. Some crocuses will self seed. Plant the corms of spring blooming crocuses in autumn, 3-4 in (7-10 cm) deep. Plant fall blooming crocuses in late summer.
Many kinds of crocus will naturalize in a short grass lawn. Among these are C. vernus (Dutch crocus and the Dutch hybrids), and C. speciosus. Other, less vigorous varieties, should be planted in drifts in a herbaceous bed or border, or in a rock garden. Crocuses are especially appealing in pots, and can be brought indoors when blooming. The dried stigmas of Crocus sativus, the saffron crocus, are used in cooking for color and flavoring. Saffron crocus is a sterile cultivar whose exact origin is no longer known. Features
The most common spring blooming crocuses in cultivation are:
To see a similar table for the fall-blooming crocus, go to the Profile for autumn crocus Colchicum autumnale Steve Christmas 1/4/06 This fall, you don’t have to be satisfied with the same old crocus. Right now, American Meadows has a really wide choice, all still sale-priced as fall bulb planting season arrives. Of course, the large-flowered Dutch Crocus and Snow Crocus mixtures are there, but you can also choose some crocus species you’ve probably never seen before—Yellow Mammoth, Blue Pearl, the exotically-striped "Minimus" and more. Of course, huge selections of all the other fall bulbs like tulips, daffodils and more are on sale now at American Meadows, too.
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