Don’t worry I get tubers like that every year and they always grow and turn into brilliant plants by about July and the tubers are much bigger when u dig them up in autumn.
I have had had about 15 like them this year and they planted up inside under heat and 6 are growing already even tho still early considering where I live.
I bought what I thought was one Dahlia tuber in a pack, turned out to be three tiny ones looking much less promising than yours, plus some bits broke off when I separated them. After three weeks in 3L pots, kept damp on a windowsill, they are now bushy, healthy 20cm high plants, so I think yours will be fine.
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
I bought dahlias from Peter Nyssen last year and they were fab. Large, firm tubers which made the most glorious flowers for months. I ordered more this year and they are pathetic wee things like the ones you have. Potted them up a few weeks ago and three quarters are sprouting. I wondered if the hot summer last year made the harvest poor. But then i look at the ones that i lifted and stored in the conservatory and they are enormous, firm, superb specimens. Hmmm. Plant them, see what happens!
Droning on a bit here but I always end up thinking of more questions.
How warm is too warm for these starting in pots? Reason I ask is I'm keeping them in the conservatory now and it gets the sun in the latter half of the day so the temperature is knocking on 30 degrees. Don't really have anywhere else I can put them that's guaranteed frost free, not too warm and with light.
Was thinking of the shed but not much light and can get warm itself.
I've got a cheap cold frame but it won't do much if there's freezing temperatures overnight.
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I have had had about 15 like them this year and they planted up inside under heat and 6 are growing already even tho still early considering where I live.
I potted up 3 other tubers I bought a few weeks ago, 2 of them have shoots.
Sarah Raven says just below the surface and that's how I've been potting them so far.
How warm is too warm for these starting in pots? Reason I ask is I'm keeping them in the conservatory now and it gets the sun in the latter half of the day so the temperature is knocking on 30 degrees. Don't really have anywhere else I can put them that's guaranteed frost free, not too warm and with light.
Was thinking of the shed but not much light and can get warm itself.
I've got a cheap cold frame but it won't do much if there's freezing temperatures overnight.