Height: 24-36 in. (60-90 cm) 36-48 in. (90-120 cm)
Spacing: 18-24 in. (45-60 cm)
Hardiness: USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F)
Sun Exposure: Sun to Partial Shade Light Shade
Danger: All parts of plant are poisonous if ingested Handling plant may cause skin irritation or allergic reaction
Bloom Color: Blue-Violet
Bloom Time: Late Spring/Early Summer Mid Summer
Foliage: Herbaceous Smooth-Textured
Other details: This plant is attractive to bees, butterflies and/or birds Average Water Needs; Water regularly; do not overwater This plant may be considered a protected species; check before digging or gathering seeds
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
On Jul 13, 2006, Veshengo from Faversham United Kingdom (Zone 8a) wrote:
I have seen it growing in the wild in South Wales (UK) and it was a marvelous sight, drifts of violet and blue amongst the grasses and other flowers, but due to local laws about collecting seeds and plants from the wild I was unable to collect any samples.
This species come under either of the following: Aconitum Anglicum (English Monkshood although it can also be found in Western Europe) or Aconitum Napellus 'Anglicum Group'. The addition of the 'subsp. napellus' part might have appeared as a typing error.
Great care should be taken when handling any part of this species. Gloves are advisable and any cut or graze should be covered.
A lot of poisoning cases have been due to people mistaking the roots for horseradish.
I have monkshood in my tall cottage gardenbed. It grows to about five foot before it flowers , it looks nice with white David phlox and black eyed susan. However, I will remove it as its poisonous aspects represent some potential of harm to children . There are so many other plants of equal beauty that we do not need risk.
I wish to add following information about the plant:
Aconite is a deadly poisonous plant acting on the heart. The plant roots are highly toxic. Orally it has sweet tatse and is often used for homicidal or suicidal poisoning purposes by mixing with food materials, drinks etc. Hence be careful!!
- Prof Dr. Nageshkumar G Rao
A herbaceous perennial from Western Britain and is the only British representative of the genus.
Some don't consider it a true native to Great Britain and think it may have been brought here over 1000 years ago. There is some discussion about whether this is a napellus sub species, napellus is a very variable species and many still list A. napellus subsp. napellus as Aconitum anglicum. Whatever the real history is, it's rare in the wild and can only be found in a few western regions of England and South Wales.
Has pale to mid green, rounded leaves that are finely divided into narrow segments. Bears violet - blue hooded flowers that bees love.
Flowers late April - July
Loves a moist but well-drained, fetile soil in light shade. Will tolerate dryish shade but won't flower as well.
This plant is highly poisonous and can irritate sensitive skins if handled. Grow where children and animals can't take a nibble.
This plant has been said to grow in the following regions:
Dillon, Montana Dayton, Ohio Edgewood, Washington Appleton, Wisconsin