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Hardiness: 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
Danger: N/A
Bloom Color: White/Near White
Bloom Time: Late Winter/Early Spring Mid Spring Late Spring/Early Summer Mid Summer
Foliage: Herbaceous Silver/Gray
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 This plant is resistant to deer
Soil pH requirements: 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) 8.6 to 9.0 (strongly alkaline)
Propagation Methods: From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; stratify if sowing indoors From seed; sow indoors before last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds
On May 28, 2008, barbur from Port Lavaca, TX (Zone 9a) wrote:
I planted 6 of these plants in September 2007 and they have thrived in hot, humid weather ever since. Often plants that can take our south Texas hot weather don't like our humidity but these have grown into large compact mounds. The plant stays short and drapes nicely over raised beds. Even though the bloom is small they show off from a distance because of the density of the blooms.
On Aug 10, 2003, htop from San Antonio, TX (Zone 8b) wrote:
San Antonio, Texas
This is an excellent plant for xeriscapes. Mine have been in the ground for over a year and take little care. They have bloomed from March to November. Requiring even less water than my other native Texas plants, I have to remember not to over water them. They need deep infrequent watering and do not like to be overhead watered. No insect pests attact them, no fertilizer is necessary and even though the flowers are small, they show up well in the foreground with dark foliaged lantana as the background planting.
Tough little guys these are: growing in the poorest and thinnest layer of soil in my yard, thriving with almost a solid layer of limestone beneath them and happily overflowing the street curb onto the hot asphalt with hundreds of blooms even with the temperature at 100 degrees for days (108 for 2 days!). NO plant has survived in this area for very long in the past.
They became a little ragged after the 19 degree temperatures this winter and an early spring freeze. I pruned them to about 5 inches and they rebounded like champs. There is one problem. The stems are fragile and break easily (like when dogs, cats and cows who have escaped from the field behind my subdivision tromp through them or I am attempting to remove persistent nut grass). I wish there was a rating higher than positive!
Seeds germinate better if acid scarified. When the soil is warm, sow the seed. Cuttings from semi-soft stems root well and should be approaching woodiness. (See seedhead photo.)
Note:
I would space them at least 2 feet apart. Small transplants quickly and eventually become large mounds. If they are too close together, they tend to develop a fungus and parts of the plants die. They obviously need air circulation.
On Mar 17, 2001, gardener_mick from Wentworth, SD (Zone 4a) wrote:
Bears abundant solitary 1" white daisy-like flowers with yellow centers borne on slender stalks. Forms a neat evergreen mound 6-12" tall and up to 16" wide. Native to the dry desert slopes, mesas, and high plains of the Southwest, where it has developed extreme tolerance to drought. Deep taproot is great for gathering moisture from the soil, but also makes it difficult to transplant once established. Great for rock gardens and erosion control. Doesn't need fertilizer. Cut back in fall.
Regional...
This plant has been said to grow in the following regions:
Glendale, Arizona Phoenix, Arizona Tucson, Arizona Merced, California Pahrump, Nevada Elephant Butte, New Mexico Nashville, Tennessee Arlington, Texas Austin, Texas (2 reports) Bedford, Texas Bulverde, Texas Colleyville, Texas Crawford, Texas Crowley, Texas Fort Worth, Texas (4 reports) Garland, Texas Haltom City, Texas Houston, Texas Lampasas, Texas Liberty Hill, Texas Lufkin, Texas Manchaca, Texas Mansfield, Texas New Braunfels, Texas Port Lavaca, Texas Rowlett, Texas San Antonio, Texas (3 reports)