Onopordum acanthium | Scotch Cotton Thistle, Silver Thistle | Flower
Onopordum acanthium belongs to the plant family COMPOSIT and Genus Onopordum This Flower prefers Dry, well drained soil a pH of 7 . All plants need light to allow the photosynthesis process of converting carbon dioxide to growth sugars to take place. Some plants need more sun-light than others. For this plant those sunlight conditions are well described as … Full sun
We are often asked about plants for humming bird attraction. Unfortunately Onopordum acanthium does not attract these beautiful hummingbird, sunbird or nectar feeding varieties of garden birds
Impressive Autumn foliage display is not shown by Onopordum acanthium so look for an alternative plant for pleasing Fall leaf properties
Onopordum acanthium Scotch cotton thistle,silver thistle is not known as a butterfly attracting plant
Almost all plants grown in gardens need to be fed using fertilzer in order to see them at their best. For this plant the suggested fertilizer program would be based upon … Typical mix of: 3 parts Nitrogen (N), 2 parts Phosphorous (P) and 3 parts Potassium (K for Latin name Kalium).
Onopordum acanthium can survive cold winters where the average annual low is -10 Fahrenheit. Scotch cotton thistle (also known as silver thistle) needs summer days with high heat. This plant does best in full sun. It does well in dry, well drained soils. This species can survive short periods of drought.
Leaves: Onopordum acanthium has spiny stiff leaves. Flowers: Scotch cotton thistle (locally known in some parts as silver thistle) has globe shaped, fuzzy, prickly blossoms. Blossoms appear in May and continue through August. Typically the blossoms are either purple or white.
Onopordum acanthium | Scotch Cotton Thistle, Silver Thistle is classed as a flowering plant specimen. The flower's principle colouring is purple,white. If the flower has other colours these flower accent colors would be described as … . Secondary color or not the flower is described as: globe shaped, fuzzy, prickly blossoms
In the Northern Hemisphere Onopordum acanthium starts to bloom around 05,01 blooming stops about 08,31
This specimen plant will normally never grow higher than 9' feet will have an overall spread somewhere between ... not specified on this plants page
"Heat-zone Gardening: How to choose plants that thrive in your region's warmest weather", Dr. H. Marc Cathey with Linda Bellamy, American Horticultural Society, Time-Life Books, 1998.