I don't know of home gardeners who grow other "bulb" plants from seed. But there are lots of tubers/bulbs that you can buy, and then lift in the fall for storage, though if you can grow a coconut palm, most of them - including dahlias, you probably don't have to lift, unless you are going to divide them. Many people in zone 8 in the US only dig their Dahlias every couple of years to divide the tubers.

There is a Bulb forum on GW - I would ask this question there if you really want to start from seed.

helhhello.

thank you for the reply. I have grown eucomis hipestrum and many other aftrican bulbs including the rapid that smell foul. the seeds are so much cheaper than bulbs to buy.

and dahlias as fantastic flowers.

I'll ask the bulb forum.

leo