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Zinnia
Fishy65
Posts: 2,276
This brown discolouration and withering seems particular to zinnias, at least in my GH. Various other plants but no serious effects on them. New to this GH lark
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Have you had them out, it looks like cold to me.
I have potted mine on twice but they have been kept in most of the time only out when warm.
are you watering them from overhead ? better to water from the bottom . Sometimes if the leaves are wet and the sun gets them they go brown
I wonder if there is a problem with zinnias this year. Mine have done the same (from seed and plugs). Bought my plugs from Sarah raven and they were great when I emailed them about it. They sent me some more but they went the same. Been given a full refund and they said that their grower was aware.
Actually yes the door and vents have been open for a few weeks now. Also watering from overhead. I've had them out hardening off but maybe didn't need to?
mine also look a bit like this but i think they got wind burnt as the first night they actually stayed out it blew a hooley and then it was really hot, ive planted some in the borders and they seem fine and to be growing but the ones in pots still look a raggy.