I know it's early to start a bulb discussion but I didn't get around to it last year so am starting to plan now. I have a long area of garden (about 6-7 metres) where I want to plant layers of bulbs and have flowers as long as possible across the year. There's a picket fence in front of the area that is about 30cm high so the flowers will need to be high enough to show above it. I definitely want daffodils in there and I love irises too but what else would you knowledgeable people suggest? Also, is there anywhere you recommend for buying bulbs? I've tended to pick up packs randomly in B&Q or my local garden centre but results have been really mixed. Thanks
There's a huge number of varieties of daffodil/narcissus, so you can have them flowering from early in the year until now. Tulips need a sunny site and well drained soil, so it depends on the aspect and the soil, as @Plantminded says.
You could also have lilies for height, and they're summer flowering rather than spring. Gladioli of varying types too- the little Acidantheras provide late colour, but they all need protection. There's a couple of hardier ones though.
I use Peter Nyssen for most of my bulbs.
I live in west central Scotland - not where that photo is...
There's a good list of what to plant and when here:
Complete Guide to Planting Bulbs - BBC Gardeners World Magazine