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Magnesium deficiency
Kath Johnson
Posts: 2
My clematis appear to have magnesium deficiency. They are in pots and fed weekly with flower power but some leaves are showing signs. Some advice is to use Epsom salts in the autumn. Is there anything i can do now or should I wait until autumn?
0
Posts
Epsom salts are usually used as a foliar spray which you can do now. I would suggest proper clematis or rose food as a slow release fertiliser mixed in with the top layer of their compost in spring and again when they first flower. Use liquid tomato or rose feed in between times and till mid summer as they will quickly consume all the nutrients in the compost..
Clematis are very hungry plants so, if you can, move them to bigger pots in the autumn when the foliage has died back and you can cut the stems to make it easier. Give them a pot of at least 60cms wide, deep and high and a good John Innes no 3 type compost. They will need feeding as above every year.
Thanks OBE I just potted 3 new ones and was thinking how to look after them best,just the job cheers.