Soapwort
Saponaria lutea

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Saponaria (sap-oh-NAIR-ee-uh) (Info)
Species: lutea (LOO-tee-uh) (Info)

Category:

Alpines and Rock Gardens

Perennials

Height:

6-12 in. (15-30 cm)

Spacing:

24-36 in. (60-90 cm)

Hardiness:

USDA Zone 6a: to -23.3 C (-10 F)

Sun Exposure:

Full Sun

Danger:

Seed is poisonous if ingested

Bloom Color:

Pale Yellow

Bloom Time:

Late Spring/Early Summer

Blooms repeatedly

Foliage:

Evergreen

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

From softwood cuttings

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 pods to dry on plant; break open to collect seeds

Properly cleaned, seed can be successfully stored

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Neutral

On Oct 28, 2012, altagardener from Calgary, AB (Zone 3b) wrote:

CactusSpike,
You may be talking about some other Saponaria sp. but it's definitely not Saponaria lutea, which is a very small alpine Saponaria with pale white-yellow flowers.

Positive

On Jun 2, 2011, CactusSpike from Sydney
Australia wrote:

I tried this plant because it was amongst a bunch of cheap herbs I bought in bulk. I was pleasantly surprised by its hardiness & blooms. I wound up going back for more & now have them growing in a variety of positions. Some are in wet, sunny spots, others in dry, shaded situations. All seem to be going OK. The plant itself looks a bit like a semi-prostrate Catchfly or Gentian, with big, pink flowers. I believe it may be sometimes called Sweet William & was amongst the bouquet Princess Kate wore to her weddding.