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Dahlia disease diagnosis please
alison.maycock9AUUR3hW
Posts: 3
I would love some help from experienced dahlia growers-- this is my first year and i have had a number of problems along the way -
i bought 24 tubers and 10 rotted in the basement whilst i waited for warm weather-- i salvaged 14.
I planted them in may in some raised beds in which i had potatoes and tomatoes last year which succumbed to the blight.= the beds are small so i planted the dahlias quite close together. Overall i had initial success with lots of blooms.
but after a lot of rain then a hot spell then some watering i noticed the plentiful new buds were not opening and were moist and sticky.
The leaves also had some white spots on them and necrotic areas
and some had gone yellow and brown-
i also noticed my runner beans in the same bed which had started well are now wilting and the beans going soft and not enlarging.
One plant had some watery tubers on it - the white plant in the pot which was the first to look bad and i have isolated it.
another plant had white stuff on its tuber -
I presume these plants have some kind of fungus- or several kinds!!- I have only seen 1 ant and couple of green aphids on them so I dont think they are infested.
Is this problem related to the previous blight?
Must i throw them away?
Can i treat them?
Must i throw all the soil away?
thanks so much for your help Alison
i bought 24 tubers and 10 rotted in the basement whilst i waited for warm weather-- i salvaged 14.
I planted them in may in some raised beds in which i had potatoes and tomatoes last year which succumbed to the blight.= the beds are small so i planted the dahlias quite close together. Overall i had initial success with lots of blooms.
but after a lot of rain then a hot spell then some watering i noticed the plentiful new buds were not opening and were moist and sticky. The leaves also had some white spots on them and necrotic areas and some had gone yellow and brown- i also noticed my runner beans in the same bed which had started well are now wilting and the beans going soft and not enlarging. One plant had some watery tubers on it - the white plant in the pot which was the first to look bad and i have isolated it.
another plant had white stuff on its tuber -
I presume these plants have some kind of fungus- or several kinds!!- I have only seen 1 ant and couple of green aphids on them so I dont think they are infested.Is this problem related to the previous blight?
Must i throw them away?
Can i treat them?
Must i throw all the soil away?
thanks so much for your help Alison
0
Posts
encourage more flowers.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
The spent flowers are cone-shaped and are more or less horizontal.
Buds are a round cushion/button shape and face the floor until they’re ready to open.
Don’t feel bad … we get several queries like yours every year.
😊
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
https://forum.gardenersworld.com/discussion/1005498/bishop-of-auckland-dahlia-buds-wont-open/p1
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.