Yellow-wort
Blackstoniaperfoliata

Family: Gentianaceae (jen-shun-AY-see-ee)
Genus: Blackstonia (blak-STONE-ee-uh)
Species: perfoliata (per-foh-lee-AY-tuh)

Category
Annuals
Biennials

Water Requirements

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Smooth

Foliage Color
Blue-Green

Height
6-12 in. (15-30 cm)

Spacing
3-6 in. (7-15 cm)

Hardiness

Where to Grow

Danger

Bloom Color
Bright Yellow

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer

Other details

Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
8.6 to 9.0 (strongly alkaline)
over 9.1 (very alkaline)

Patent Information
Non-patented

Propagation Methods

Seed Collecting