The lesions are definitely aphid damage, most likely Aphis verbasci. It's been a problem nationwide this year, and we in the Buddleja world are...
With nematodes it's all down to timing. I've found the vine-weevil preparation to 100% effective if I follow the instructions - use on damp soil,...
I think that's a large cotyledon, and possibly what's keeping the plant alive.
Too cold still. I think the yellow in the leaves is because the low temperatures slow the production of chlorophyll. There's no point adding extra...
You pruned too hard, too early and encouraged sappy growth before the decent weather. There needs to be more woody structure to support the new...
[ATTACH]Here they are, vicious little monsters, on the underside of a leaf and destroying one of my precious cuttings.
Mullein (Verbascum) aphid is causing the distortion and yellowing - I can see them in photo #4. Sooty moulds follow due to the sugar content of...
I'm using horticultural soap, which is potassium salts of fatty acids. You must buy the proper product. I also soak chilli flakes and garlic in a...
Absolutely not! The Provado Killer is systemic and remains in the plant for up to four months. The pesticide and its residues will be in the...
Nemasys nematode vine weevil treatment is very effective in pots. Best to apply in September when it's both warm and rainy, as the grubs do most...
Last year was the first time I'd seen significant aphid damage to Buddlejas, even to some B. davidii cultivars. It's been so bad so far this year...
I'm starting SCUBA - the Stop Cruelty Upon Buddlejas Association.I've been able to keep plants small by constricting them, but I've found this...
Robert Plant of Led Zeppelin - was the pun intended? (Hint - screw up your eyes, and it becomes clear.)
Buddlejas. I would suggest Buddleja x weyeriana 'Sungold' - mine started flowering at the end of July and still had a few flowers on it today....
[IMG]Buddleja macrostachya, bred in England from two Indian-Himalayan collections. I was surprised how hardy it proved over last winter, and it...
Seedling growing through the original plant? If not…The Nanhoensis type is naturally small and not a sport, highly stable and unlikely to sport...
The most likely reason for the base to rot is poorly drained soil. Water moulds are found in all soils, but need it to be very wet in order to...
From my experience, I would guess the Buddleja’s roots have become damaged. The fine roots retreat in the winter and, if the plant is stressed,...
Any generic potassium sulphate or sulphate of potash will do. Westland, Levington et al fertilisers can be found in many garden centres, although...
The flowers don't look well supported by the stems. I would guess the growth is too sappy, which means you need less nitrogen in the feed, and...
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