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PlantFiles: Marsh St. John's Wort, Marsh Hypericum
Hypericum elodes

 
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Family: Clusiaceae
Genus: Hypericum (hy-PER-ee-kum) (Info)
Species: elodes (ell-o-dees) (Info)

Category:
Ponds and Aquatics

Height:
under 6 in. (15 cm)

Spacing:
36-48 in. (90-120 cm)

Hardiness:
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
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous
Velvet/Fuzzy-Textured

Other details:
May be a noxious weed or invasive
Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

By Baa
Thumbnail #1 of Hypericum elodes by Baa

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral Baa On Oct 19, 2002, Baa wrote:

A creeping perennial of marshland in Western Europe.

Has ovate, greyish green, densely hairy leaves borne close together. Bears bright yellow flowers. The sepals have red, glandular teeth.

Flowers June-September

Needs a constantly moist soil, in sun or light shade. Will tolerate being partly submerged.

Has an indefinite spread so may become invasive in large bog gardens.

Propagate by dividing the stolons in Spring.



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