The 15 weeks of chilling will usually take you into March, which is when daylight hours are increasing and ambient temperatures start to warm. This prevents early tender shoots from getting zapped by freezing temperatures. These plants are perfect for pots and borders and will flower from September into November. For autumn blooming crocuses, plant bulbs in late summer. Tip – Plant Crocus corms in drifts in … By: Bonnie L. Grant, Certified Urban Agriculturist. Dig trenches 5 inches deep and plant corms with the flat side down and 1 to 2 inches apart. Fall-blooming Colchicum spp. Save my name, email, and website in this browser for the next time I comment. The plant will not emerge if it doesn’t get this combination of correct conditions. Ideally, the best time to plant a crocus is 6 to 8 weeks before the first expected frost. So, this holiday season, we created a giving campaign for two of our favorite non-profits who are working to help put food on the tables of hungry families across the U.S. and around the world. Depth and Spacing: Crocus look best when they are planted in groups of 3 to 9 bulbs.Space them 3" apart on center and plant … Since crocus is considered a spring bloomer, you need to plant corms in late summer to early fall. Autumn crocus add a rainbow of colour to the garden as summer flowers start to fade, and Spring Crocus are one of the earliest plants … Satisfying the chilling and photo-period requirements are important for crocus bulb growing but so is the actual planting. All this signals bloom to the plant and points to the best time to plant a crocus. When to Plant Crocuses Before the ground freezes in the fall, crocus corms can be planted most anywhere, except in the dense shade on the north side of buildings or under thickets. Corm clusters should be replanted at least 6 inches apart, a little farther than single corms. Plant Crocus corms around 4 inches deep in gritty, well-drained soil. are different from spring-blooming crocuses and other autumn crocus-type plants… Crocuses are the first bright surprise in early spring, painting the landscape in jewel tones. Why does it matter when you plant your bulbs and corms? Plant in any sunny or partly shaded position in cool, moist, humus-rich soil. Corms are very similar to bulbs, but corms are specialised sections of the stem. The taller colchicum autumn crocus will flower in part sun, but can get floppy. Crocus corms will not bloom if the photo period is not long enough to provide solar energy. Robust types provide drifts of colour in lawns and underneath deciduous trees. Interestingly, most plants not only need vernalization but they need increased photo hours to sprout. Bulbs should be planted 4 in (10 cm) apart or in widely spaced groups of more crowded bulbs. If soil has too much clay, amend it with bark, leaf litter or compost. Crocus species and cultivars are mostly very hardy and are easily grown plants that are particularly well suited to rockery planting. Here are some of our favourite Spring Crocus varieties: Your email address will not be published. The appearance of corms differs from bulbs as corms tend to have a flattened shape. Light: Fall flowering crocus bloom best in full sun. As a thank you for joining our campaign, we’ll gift you our brand new eBook,. WATER: Once after planting, moderately in spring. Crocuses can be dug up shortly after flowering and divided into smaller clusters to be replanted elsewhere or shared with friends. Sandy soils will require some organic amendment to enhance nutrient content. Flowering mainly in late winter to early spring, many crocuses are good in borders or seasonal containers while others are best in a rock garden or alpine house. Search our blog for tips, tutorials and the top varieties of the season. Here, Monty Don demonstrates how to plant autumn crocus at the base of a hedge: Soil: Fall flowering crocus grow … These plants are perfect for pots and borders and will flower from September into November. Ideally, plant crocus corms 6 to 8 weeks before a hard frost is expected and … Here are some of our favourite Autumn Crocus varieties: Spring Crocus bloom from late February into spring, so the best time to get these corms planted is September-November, just before the ground freezes in Winter. HOW TO PLANT CROCUS. The best time to plant autumn-flowering Crocu s is late July to September. Discover exactly when and how to plant Crocus corms and fill your garden with stunning Crocus flowers for most of the year.

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