Posted: 13/05/2014 at 18:19
The shoots are still relatively small (about 8" tall) at the centre of the pots, leaving much of the soil fully exposed to rain, so I really don't think it's under watering. There's been lots of rain in the last week so if anything, the soil has had more water than it needs! My flower beds are nicely soaked, though snails and caterpillars are starting to do their work. Luckily, nothing's climbed up the pots yet.
I'm hoping to keep them in pots so I can put them on a patio. They're not very big (one is about 1.5 cubic feet and the other maybe 2.5) but I'm hoping it'll be enough to grow and flower by the summer. Last year I grew a dahlia in the ground and it bloomed very well. When I dug up the tuber afterwards, its roots didn't seem to have spread very far, so that's why I'm hoping these pots will be enough.
I wondered if it's because I haven't added much fertiliser or plant food since planting them, but the other dahlia is growing extremely well with no signs of wilting. They were planted in fresh multi-purpose compost with a bit of farmyard manure, blood fish & bone. I then scratched-in a handful of rose & shrub pellets with added horse manure about a month later (now a month ago).
I used the same mix to plant other things in pots and they're all going very well, it's just this one dahlia that's showing signs of early wilting. There's no sign of any nibbling to any leaves.