There are many varieties of Dahlias and some take over 4
months before they bloom. Do you know what variety they
are? I would just let them alone and feed them every
couple of weeks and you should see some blooms.

Dahlias do their best in a area with full sun but I have
some in an area with only 6 hours of sun and they bloom
quite well. I don't start feeding them until they are about
eight inches tall.

Until yours bloom, you can enjoy pictures of mine from my
web site, http://members.iglou.com/brosen/dahlias1.htm I
have over 60 of them this year.
--
Bill R. (Ohio Valley, U.S.A)

Could you give me the name of the one top right corner of your link.... the
yellow and pink one..... that's the one I discovered by accident... I lost it a
few years back when I didn't get around to digging them up. Thank you in
advance.
Colleen
Zone 5 CT