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)
Sun Exposure: Full Sun Sun to Partial Shade
Danger: All parts of plant are poisonous if ingested Handling plant may cause skin irritation or allergic reaction
Bloom Color: White/Near White
Bloom Time: Mid Summer Late Summer/Early Fall
Other details: This plant is attractive to bees, butterflies and/or birds Drought-tolerant; suitable for xeriscaping
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
On Feb 18, 2013, coriaceous from ROSLINDALE, MA wrote:
One of the easiest, toughest, and most beautiful of perennials. Blooms its head off for months on end. Makes a good cut flower. Beautiful long-lasting red fall foliage color. Drought tolerant, deer-resistant, no significant pests or diseases.
Grossly underutilized in gardens.
Slow to grow, and since it's taprooted it doesn't move well once established. Potted plants are small and unprepossessing, and it takes a year or two for them really to show what they can do.
On Aug 10, 2012, acertel7 from Bloomingdale, IL wrote:
I LOVE this plant! Talk about an easy, reliable plant that blooms all summer long! My Euphoria is planted in a narrow area between a concrete walkway and the south-facing wall of my garage. The many white flowers stand out against the dark, brick background and are beautiful! They lighten the area with their white color and their "airiness" and are even nice in a bouquet. They have bloomed steadily since the beginning of June and it's near the end of August with no diminishment of flowers. Other than adding a small support to keep them from leaning away from the brick wall, Euphorbia corollata has demanded little water and NO deadheading, and has truly been a carefree plant in my yard. I wish I had an entire line of them along the brick wall as they stand out much better than the "Stella d'Oro" that is along side them. I'm on the prowl for more of these beauties as my local garden center does not carry them.
On Jan 17, 2005, JodyC from Palmyra, IL (Zone 5b) wrote:
The flowers attract wasps, flies,
and short-tongued bees.The wasps are such
visitors as Mud Daubers, Paper wasps, Spider wasps, Cuckoo
wasps, Tiphiid wasps, Crabronine wasps, and Ichneumonid
wasps. Fly visitors include Syrphid flies, bee flies,
Tachinid flies, flesh flies, blow flies, and Muscid flies.
The seeds are popular
with birds, including the Wild Turkey,
Greater Prairie Chicken, Bobwhite, Mourning Dove, and
Horned Lark. This plant is rarely eaten by
herbivores because of the toxic white latex in the leaves
and stems, which can kill cattle.
This plant has been said to grow in the following regions:
Morrilton, Arkansas Bloomingdale, Illinois South Amana, Iowa Jamaica Plain, Massachusetts Millbrook, New York Crossville, Tennessee Muscoda, Wisconsin