Aconitum napellus



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Aconitum napellus

Aconitum napellus has exquisite indigo blue hooded flowers held in delphinium like spires from late summer and autumn.
Plus deeply incised dark, glossy foliage.

Spires of flowers tower up to 1.2m. on long, strong, straight stems, so it is a wonderful cut flower. Though do be aware to wear gloves when handling.

Plant Aconitum napellus in part shade to sunny positions.
And it enjoys well drained, humus rich soil, with some moisture over the warmer months.
One of the easiest and most spectacular flowers you can grow in the garden.

The foliage has vivid autumn colours too while it still has autumn flowers atop. So Aconitum napellus is one of the glories of autumn.

Very long lived perennial clump.
Cut it back to the ground at the end of autumn ready for new growth in spring.
1.2m. High flower towers x 60cm. wide clump of decorative foliage.


Seeds can be sown directly in the garden in winter or early spring / or sown in punnets indoors at any time for earlier plants.
Wear gloves when handling the seed, though there is little risk from the seed, but it is wise to treat all Aconitum with respect.

Sow in punnets on surface of good quality seed raising mix. Cover to 5cm depth with moist seed mix or vermiculite.
Moisten the mix by placing the punnet in a water bath, with the water level just below the surface, and allow the water to percolate up from the bottom. This will ensure the mix is thoroughly moist but not drenched.

Label the punnet with the name and date sown.

For best germination keep moist in a well lit position at a temperature of approx. 25C for 14 days.
Punnet can be kept moist by misting from a spray water bottle.

For best germination seeds now need a period of chilling (a pretend winter) – so wrap the sown, moist punnet in cling-wrap and place in fridge (not freezer) for 21 days.

Then take out, unwrap punnet, and keep moist in approx. 25C, in a well lit position.

Seeds need good light to sprout, but the punnet should not be in direct sunlight.
Seeds germinate in approx. 30 days.

Or sow seeds directly in garden in autumn/winter and leave to get the required chilling from winter nature before germinating in the spring.

SEED COUNT: Minimum 20 seeds per packet approximately.
(We aim to make our seed counts on the generous side – so you will receive at least 20 seeds)

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