Hi, up until a few weeks ago my bedding dahlia's were flowering ok but now small buds are forming but not flowering and turning to mush. I've never grown them before and i'm really disappointed as they were lovely. Any idea's whats wrong.
Hi, I water into the compost, they are in pots (3 plants with lobelia) I have been feeding them with miracle grow and the leaves look healthy enough but wondering if the pots are not big enough.. I have a gap in my sunny border and was wondering whether to pop them in there so their roots have more room to spread.
Hi, there are obvious signs of leaf damage, too, which suggests some sort of pest is eating parts of your dahlias, quite possibly caterpillars of some type. There are plenty about in this hot weather. It could also be slugs or snails but there are no slime trails and they've been hiding from the hot sun.
Earwigs do eat dahlia flowers, https://www.rhs.org.uk/advice/profile?PID=494 , though they are unlikely to causing the flowers to be 'mushy'. I did notice some small black spots on the leaves so maybe there's some kind of bacterial infection as well.
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