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PlantFiles: Maltese Cross, Jerusalem Cross, London Pride
Silene chalcedonica 'Flore Plena'

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Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Silene (sy-LEE-nee) (Info)
Species: chalcedonica (kalk-ee-DON-ee-kuh) (Info)
Cultivar: Flore Plena

3 members have or want this plant for trade.

Category:
Perennials

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

Spacing:
18-24 in. (45-60 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Scarlet (Dark Red)

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
Average Water Needs; Water regularly; do not overwater
This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive blumburg On Jun 8, 2011, blumburg from powell, OH (Zone 5b) wrote:

This plant is very attractive to hummingbirds. It tends to flop if not staked. It might be invasive in some situations as it has spread from the original two plants in three years and is ready to split again. There are also some seedlings but they have not flowered yet so don't know if it will be the same bright red color as the original. There is a problem with yellowing leaves at the base and so the plant needs something shorter to hide the ugly parts. Daylilies work well for this purpose. The plant continues to bloom for a long time if the flowers are deadheaded and will rebloom if cut back to the ground after the initial blooming period.

Regional...

This plant has been said to grow in the following regions:

Powell, Ohio



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