Onopordum acanthium
Scotch Cotton Thistle
Onopordum Acanthium is a deciduous,erect biennial with spiked silver-blue foliage.It bears hair-like purple flower head on an upright spiky stem. Plant can be invasive and difficult to remove.
-
Full sun
-
Very little water
-
Full Frost Hardy: 5F (-15°C)
-
Free draining
Common name
Scotch Cotton Thistle
Latin name
Onopordum acanthium
type
Biennial
family
Asteraceae
ph
5.6 - 7.3 Acid - Neutral
-
Light
Full sun
-
Frost
Full Frost Hardy: 5F (-15°C)
-
Soil
Free draining
-
Water
Very little water
Plant & bloom calendar
-
Best time to plant
-
When the plant will bloom
full grown dimensions
1.00 M
3.00 M
Onopordum acanthium
Onopordum Acanthium is a deciduous,erect biennial with spiked silver-blue foliage.It bears hair-like purple flower head on an upright spiky stem. Plant can be invasive and difficult to remove.
Flowering Season
From Early Summer TO Late Summer
Flowering season.
Planting Season
From Early Spring TO Mid Spring
Plant in a sunny position.
Propagation by Seed
From Mid Spring TO Mid Spring
Fill a seed tray with seed compost,water and allow to drain. Sprinkle seeds over the surface allowing roughly 25mm space between seeds and cover with a thin layer of compost. Put tray in a clear polythene bag and place on a windowsill. When seedlings show remove plastic bag. When the second pair of leaves appear on the seedlings thin out to 50mm spacing by removing the weakest looking plants. After 2 or 3 weeks and when danger of frost has passed plants can then be planted outside into required position.
jacq1075
SikoMa
junebensted
annelisa26
sharonE
alfanige