Architectural Plants – Alliums

Of all the architectural plants available alliums are for me the stars of the show.

Architectural Alliums

I love everything about them – their colour, shape, vertical nature and amazing seed heads. Whatever size garden you have there is an allium to suit as they can grow anywhere in height between 30cm -200cm. I think another key to their success is their versatility, sitting equally well in a modern minimalist setting or scattered throughout a mixed herbaceous border. Their dense purple colour is stunning and contrasts well with hot colours as well as the cooler shades of lilac and white.

Allium Seed Head

Allium Seed Head

Plant the bulbs in September in a sunny site and you will be rewarded in the summer with a striking display. Once they’ve flowered leave the heads to dry on the plant and either appreciate them in the garden covered in frost or bring them indoors for a tall vase.

Of all the alliums I have 3 favourites which I use and recommend as a garden designer:

1. Allium christophii – Flowers freely in June, bearing large heads up to 25cm of star-shaped amethyst-violet flowers with a metallic sheen. (My favourite seed head)

2. Allium hollandicum ‘Purple Sensation’ – The best rich-purple allium of all. (Plant amongst ornamental grasses, or as part of a Mediterranean scheme)

3. Allium sphaerocephalon – The best of the smaller alliums with small drumstick shaped heads of maroon and green. (Add later interest, flowering in July and August)

Mass Allium Planting for Impact

Mass Allium Planting for Impact

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