Did you know it is normal for Allium leaves to die back as the flower buds open? Nothing wrong with the plant at all - it's just that they lose all interest in looking after their leaves once they have their flower buds. The unsightly foliage is best dealt with by planting amongst low-growing leafy plants to hide it!
Take a look at Purple Sensation for strong colour and Christophii for spectacular large heads on short stems.
Alliums are very drought tolerant (think last summer), great as cut and dried flowers, and bee-friendly too, so definitely a must-have for your garden.
Gardening advice by Catherine McMillan
Order your copy of Gardening for the Uncommitted: What You Really Need to Know, When You Don't Really Want to Know: available from Amazon.co.uk on paperback, eBook and KindleUnlimited. Don't forget to leave a review!