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Spacing: 15-18 in. (38-45 cm) 18-24 in. (45-60 cm)
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)
Sun Exposure: Full Sun Sun to Partial Shade Light Shade
Other details: This plant is attractive to bees, butterflies and/or birds Drought-tolerant; suitable for xeriscaping Average Water Needs; Water regularly; do not overwater Self-sows freely; deadhead if you do not want volunteer seedlings next season
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 the rootball From seed; direct sow after last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds
On Apr 4, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:
Tough species - I have never seen them selfseed. Bloom a bit later than C. montana and have heavily lobed leaves that stays close to the ground. More uncommonly sold compare to C. montana. A common name is Tall Bachelor's Button.
On Jun 11, 2007, bakingbarb from Lynnwood, WA wrote:
Flowers are wonderful addition to the garden. The plant is spreading though so plant it where you have lots of space. Also it is easy to dig up the baby plants, just make sure to get some roots with it.
On Jul 23, 2004, peonylady from Anchorage, AK wrote:
Our USDA zone is usually 3, although we have had
several favorable winters lately. The Persian Cornflower
has performed very well, has not reseeded agressively here,
grows strongly, may need dividing every third year to keep it
in bounds, color and form is very attractive, and it is
especially nice to photograph.
Regional...
This plant has been said to grow in the following regions:
, Booneville, Arkansas Edwardsville, Illinois Saint Charles, Illinois Wauconda, Illinois Mason, Michigan Pinconning, Michigan Minneapolis, Minnesota Rosemount, Minnesota Saint Paul, Minnesota Saint Joseph, Missouri Manchester, New Hampshire Buffalo, New York Richfield, Ohio Bartlesville, Oklahoma Knoxville, Tennessee Weatherford, Texas Kalama, Washington Lynnwood, Washington Marysville, Washington Poulsbo, Washington Seattle, Washington Menasha, Wisconsin
One vendor has this plant for sale.
