Forum home› Problem solving
This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.

Dahlia problem

Lorna95Lorna95 Posts: 436
in Problem solving

Could somebody please tell me what's wrong with my Dahlia, it is in the greenhouse. It was ok the other day.now it has this white stuff on it.

I have it on two of my Dahlia's but all the others seem ok.

This is the top.

image

 

This is underneath.

image

 Any help would be much appreciated.image

Posts

  • sanjy67sanjy67 Posts: 1,007

    looks a bit like mould lorna but i'm no expert, ive had some white mould on tops of compost on some plants (not dahlias) in my glass room, i scraped it off and put them outside. Have you got any on the top of compost & if so are the leaves touching it.

    My dahlias are growing in the ground outside quite happily

     

  • Lorna95Lorna95 Posts: 436

    I don't have any white stuff on the compost, all the other Dahlia seem to be doing fine. I haven't put the outside yet as we are  still getting a few really chilly nights, hopefully they will go out soon.

    Thanks for the advice sanjy

  • sanjy67sanjy67 Posts: 1,007

    i'm sure someone will be along to advise you soon, if it is mould having the windows open during the day helps (if you didn't already know image)

  • Lorna95Lorna95 Posts: 436

    Thanks Sanjy, i have the door open during hot days and pour water on the floor to cool it down, there in nothing wrong with any of the other plants so don't know what's wrong.image

  • WonkyWombleWonkyWomble Posts: 4,538

    I've been moving mine out in the daytime and back in at dark, they seem happy and nearly ready to go out. I've potted the largest up and is outside already and hasn't suffered as yet, fingers crossed!image

  • Lorna95Lorna95 Posts: 436

    Thanks Tetley, I will cut off the affected parts tomorrow and start to get them hardened off, we have had some bad winds here and it has been really chilly here at night that's why i didn't put them out, I don't water from above, i use a tub and fill it with water and put them in to that. Thanks again.

     

    Wonkywomble, mine have been doing great it was just today that it has that on it, i'm glad yours are doing well.

  • Dave MorganDave Morgan Posts: 3,123

    Lorna does it rub off? If so a slight mould, if not and I can't enlarge the picture it could be leaf miner.

  • Lorna95Lorna95 Posts: 436

    Hi Dave, I didn't try to rub it off, (stupid me for not trying) I've seen leaf miner in the garden before, it doesn't look the same to me, I didn't know if it was woolly aphids but i've never seen them before on my plant only on pictures on the net. I will have to try and see if it rubs off tomorrow. Thanks for the reply. 

  • Lorna95Lorna95 Posts: 436

    Thank you very much Edd, that is a great bit of information, never heard of using cows milk before but if it works then that's great.

    Thank again.image

Sign In or Register to comment.