PlantFiles: Dutch Crocus, Spring Crocus Crocus vernus
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Hardiness: USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure: Full Sun
Bloom Color: Pale Pink Rose/Mauve Magenta (Pink-Purple) Pale Yellow Bright Yellow Blue-Violet Violet/Lavender Purple Dark Purple/Black White/Near White
Bloom Time: Late Winter/Early Spring
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: By dividing rhizomes, tubers, corms or bulbs (including offsets) From seed; direct sow outdoors in fall
Seed Collecting: Allow pods to dry on plant; break open to collect seeds Seed does not store well; sow as soon as possible
On Apr 2, 2012, sshort from Kansas City, MO wrote:
My most anticipated flower in spring. But, don't forget, squirrels LOVE them. I planted a 'zillion' three years ago anticipating a carpet of color the next spring. It took less than one week for the local squirrels to dig up all of them. All they left were the established crocus. The next year I planted squirrel resistant spring bulbs but they just are not crocus. Now that the neighbor's huge pecan tree is gone (sad but more sun for my roses) most of the squirrels have moved on. I will try again this fall.
On Oct 25, 2011, wefarmasmidgen from Bloomington, WI wrote:
When the bees came from the nearby beehive on the first sunny, warmish day had nothing to eat, I started planting these crocus. I planted about 100 bulbs for 4 or 5 years in the fall. Now when they come up in the early spring, my front yard "hummmmms" with the happiness of the bees finding something to bring back to the hive.
On May 16, 2004, Howard_C from St John's, NL wrote:
I much prefer the "species" crocuses myself - there are about 80 other species not to mention innumerable cultivars of them! There is a much larger range of colours, including real blues, wonderful markings when viewed close up, and a longer flowering season overall. They may be smaller, but they open up more in the sun and many increase as well as, or better than, the "Dutch" cultivars. Many, especially the chrysanthus/biflorus hybrids have been around for about 100 years and are easy to grow - others require simulated alpine mountainsides and are a little more difficult. Some that I have been unable to grow outside do well in pots. About a third of them flower in fall or winter (depending on your climate) so we in St. John's Newfoundland have crocuses from September through to May, with a short gap outside from mid December to late March, but they still can continue in pots in a frame. (I'm not talking about the "False" Autumn Crocuses here, the Colchicums, which I love too, but fall flowering true crocuses.)
Compared with these I find the "Dutch" ones coarse and dull!
On Apr 2, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:
Big, bold, beautiful. Dutch crocus come in a variety of colors and bi-colors. They bloom with the earliest daffodils.
Crocus prefer full sun while the foliage is ripening, but then can tolerate shade. They prefer a site that dries out some during the summer, but with adequate moisture in the remainder of the year.
The corms can be lifted when the foliage is spent and the cormlets removed either to a nursery bed or just sited in a new location for very fast increasing, or they can be left in the same place for many years before needing to be thinned.
This plant has been said to grow in the following regions:
Auburn, Alabama Chico, California Garberville, California Oak View, California San Diego, California Broomfield, Colorado Colorado Springs, Colorado Stone Mountain, Georgia Hampton, Illinois Washington, Illinois Boswell, Indiana Macy, Indiana Dearborn Heights, Michigan Pinconning, Michigan Canton, North Carolina Bucyrus, Ohio Cleveland, Ohio Crossville, Tennessee Broadway, Virginia Roanoke, Virginia Midland, Washington Bloomington, Wisconsin