Euphorbia Species, Swamp Spurge

Euphorbiapalustris

Family
Euphorbiaceae (yoo-for-bee-AY-see-ee)
Genus
Euphorbia (yoo-FOR-bee-uh)
Species
palustris (pal-US-triss)
Synonym
Euphorbia sauliana
Galarhoeus palustris
Sun Exposure
Full Sun
Foliage
Herbaceous
This plant is resistant to deer
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
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)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Bright Yellow
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Chartreuse/Yellow
Orange/Apricot
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Bag seedheads to capture ripening seed
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

San Jose, California

San Leandro, California

Saint Charles, Illinois

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Gardener's Notes:

0
positive
0
neutral
0
negative
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