Allium bulbs should always be planted in the fall, ideally from September through November. They will flower from May to the ...
While the size, form and bloom period of blue allium flowers vary from one species to the next, each is a dependable ...
Once planted, they will then return to flower each year as they're perennials. Which? Gardening magazine grew ... How late can you plant allium bulbs? When the Which? Gardening magazine researchers ...