A few years ago (2016) I planted some allium bulbs. They were allium Giganteum, allium Gladiator, allium Purple sensation, alllium Mount Everest and allium sphaerocephalon. I planted them in October.

The next year all of them flowered except for a. sphaerocephalon. I thought it needed some time to establish. I let them go to seed.

This year, only a few Purple sensation flowered, no signs of any white Mount Everest, no signs of Giganteum nor Gladiator. Sphaerocephalon hasn't flowered yet.

I fear they are lost. Could it be they are dormant this year? Did they die off?

I also bought a. moly, a. caeruleum and a. oreophilum last year and planted them in late fall (December) as the soil was workable and no freezing temperatures. This spring only a few of them flowered although I planted 10 of each.

As with my alliums I always leave leaves on, never tear them off. I live in a city so no special animals. No voles nor mice. There are a lot of slugs, though. I have a sandy loam, neutral soil. Climate is something between oceanic and Mediterranean with hot (sometimes dry sometimes humid) summers and dry winters with the lowest temp. - 12 degrees C (around 11 F).

(I won't post any photos because this is the third time I am posting this so something is apparently glitched.)

Thanks for replies in advance