Asteraceae
Tragopogon dubius subsp. major
Tragopogon dubius subsp. major
Also known as Tragopogon dubius var. decipiens, Tragopogon majus var. decipiens, Tragopogon major, Tragopogon dubius var. major
Flowering Plants · Native Plants · Salsify · Wildflower · Meadow · Yellow Flowers · Seed Head · European Native · Biennial · Asteraceae · Pollinator · Ornamental Grass-Like
Giant salsify is a stately biennial to short-lived perennial with large, showy yellow flowers that close by midday and produce striking dandelion-like seed heads. It is easy to grow in average, well-drained soil with moderate watering and tolerates partial shade, though it blooms most freely in full sun. Allow seed heads to mature if you want it to naturalize, but be aware it can self-seed prolifically in open ground.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately, keeping soil evenly moist but never waterlogged; drought-tolerant once established · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6.5–7.5
- Temperature
- -10°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Austria, Baltic States, Belgium, Bulgaria, Central European Rus, Czechoslovakia, East European Russia, France, Germany, Hungary, Krym, South European Russi, Spain, Switzerland, Ukraine, Yugoslavia
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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