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Height: 12-18 in. (30-45 cm) 18-24 in. (45-60 cm) 24-36 in. (60-90 cm) 36-48 in. (90-120 cm)
Spacing: 24-36 in. (60-90 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) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
On Oct 15, 2007, kqcrna from Cincinnati, OH (Zone 6a) wrote:
This plant wintersowed very well for me. Blossoms have been as large as 5 inches in diameter. I think the green eye makes it particularly pretty and unique in the sunny garden.
On Sep 3, 2005, flowercrazy39 from Manchester, NH wrote:
So far I like this plant a lot. Hasn't rained hardly at all here in southern New Hampshire so some of my flowers have had a hard time to bloom. But it's growing and I've seen at least two blooms so far and they last a really long time.
On Oct 14, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:
I purchased seeds for this plant in 2001, where they listed it as an annual, but the Irish eyes have been coming back each year to delight me. They reseed prodigiously and I find that I end up pulling up or moving many seedlings during the summer, which have strayed into the other plants surrounding them. I suggest that you give these plants plenty of room or plant them as part of a cottage style garden. They will probably need staking midway through the summer as they can grow up to 4' tall!
Halfway through the summer I needed to move a group of these to another location and they took off in their new home without even wilting - of course it's been a cool (70's) and rainy summer here in NY. It is now October14th and a few of the group that I moved are still blooming despite several weeks of cool weather and light frosts. Amazing!
They grow well from seed and are hard to find (at least around here) as plants, so I would suggest just buying seed and sowing them in early spring. After the first year you should have enough to move or share with others.
They have done well in my front garden which has well drained soil and full sun. The new location I moved some to is also in full sun but has soil that is more moist but also well drained. They seem to do equally as well there but haven't been through a winter in that location yet.
Regional...
This plant has been said to grow in the following regions:
Auburn, Alabama Vincent, Alabama Boulder Creek, California Calistoga, California Clayton, California Fairfield, California Petaluma, California San Leandro, California Winter Springs, Florida Machesney Park, Illinois Greenville, Indiana Louisville, Kentucky Haydenville, Massachusetts Quincy, Massachusetts Dearborn Heights, Michigan Manchester, New Hampshire Ithaca, New York Cincinnati, Ohio (2 reports) Salem, Oregon Mercer, Pennsylvania Osceola Mills, Pennsylvania Columbia, South Carolina North Augusta, South Carolina Webster, Texas Kalama, Washington