How To Plant And Grow Alliums

This Autumn in the Grow Club, we have gone all-in on fabulous ornamental onions, and have an amazing range of new and classic bulbs to choose from!

Allium hollandicum ‘Purple Sensation’ and ‘Ambassador’

Alliums are stunning unique flowers that no other quite compares too. Their large pompoms make them sensational additions to any garden adding structure and form. Pair that with the fact they come in gorgeous decadent blues, purples and stylish whites with star shaped flowers, they are a favourite of choice for all our Grow Club members. Not to mention they’re a favourite with our lovely honeybees, bumblebees and butterflies too!

Here’s a quick planting and care guide for your Alliums! 💐

1. Before planting, make sure to choose a well-lit area of the garden where the plants are likely to get plenty of sunlight. Also make sure you know how tall the alliums will grow, as the difference in size between one variety to another can be drastic. Best planted in well-drained soil, as they do not like heavy, clay or damp soil.

2. Planting depth is important for alliums as their tall stems need support to stand upright when fully grown. Check the required depth of your bulbs with the Seed Pantry guides, before planting, but in general, they need to be planted around 3 times the height of the bulb.

3. Spacing alliums correctly is equally important as the larger types require far more space in order to grow well. Plant smaller growing alliums 7-10cm apart, while the taller ones need at least 20cm between each bulb. If you are growing in pots make sure that they are deep enough to give plants the space needed so that they get enough water – often 40cm deep or more is great for containers.

4. Place your bulbs in the space pointy end up and simply cover the bulb with soil, give them a good drink of water and wait for the magic to happen! Alliums are so easy to grow, they make a very stylish display and the bees love them too!

Alliums in Garden Design

White Alliums used as a single colour pallet look beautiful.

There aren’t many plants that can be considered dainty AND bold, however smaller Allium flowers certainly fit the bill. These flowers will stand out wherever you plant them, their tall pompom like heads makes them immediately eye-catching in any garden display and are perfect for planting amongst flowers and green perennial foliage. They come in such a variety of colours, heights and sizes and once those summer blooms have faded their impressive structural seed heads will continue to spark interest!

Join the Grow Club, add some Alliums to your Grow Club box this month or treat your garden to a few ornamental Onions at the Seed Pantry Allium shop!

Seed Pantry Team 🌼