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Leaves and sometimes stems are marked by dark blotches caused by a fungus. The spores overwinter on fallen leaves, stem lesions and bud scales, and reinfect the plant the next spring when there's a flush of new foliage. If these leaves

die down to tough yellow roots in autumn, over-wintering to grow up again the following spring.Tall-growing perennial plant which spreads below ground by rhizomes or across the surface by creeping stems or stolons to form dense clumps of stinging

then you could just remove it, or cut off some of it, wouldnt harm things I'd have thought. J. I keep mine in the cool greenhouse overwinter.  Don't forget that you can make lots of new plants with the big leaves, each leaf cut across into slices

I've got the same problem, three foot tall excellent plants but no flower heads and its november now any advice welcome. Early purple sprouting is worth the effort and will overwinter perfectly well (I live in the north) however, it needs staking

an unheated greenhouse would it be better to pot my little tree up and fleece it in the greenhouse overwinter for this year and look at planting it out in spring or get it in the ground before the hard frosts and then fleece it? Any advice would be a great

Aptly named blackspot is a fungus that causes dark spotting on rose leaves and stems. Eventually, leaves turn yellow and drop off before autumn. Spores overwinter on the fallen leaves and re-infect the plant in spring when new foliage appears

with them now over the winter period.  I am not really sure where I want to place these in my garden and I do not have any form of cold frame or greenhouse to overwinter.  Can I just plant them all into a larger planter and then move them come springtime

I have some regal pelargoniums outside in my garden.  I want to keep them for next year and wonder how to overwinter them. a)  Do I prune them hard ? b)  Do I pot them up and put them in an unheated shed ? c)  Do I pot them up and take them into my

I have 3 citrus plants which I have overwintered in my conservatory. They look healthy but leaves and stems have small brown bumps on them which I can pick off with a thumbnail (although there are hundreds) and the leaves are covered in a sticky

eventually turn brown and wither. If the problem isn't tackled, tomato yields are lower and the fungus can overwinter in the greenhouse and persist the following year. Tomato leaves develop yellow blotches, then turn brown and wither. The crop might also