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Spores carried by water and wind spread this fungus, which leaves primula foliage peppered with holes. The initial signs are spots in a yellow-orange area, or in grey, papery tissue. When the centre falls out, holes appear. Look beneath the leaves and there may also be white fung...
Sometimes shoots appear on previously plain-leaved plants with attractive variegations, and these can then be propagated by nurserymen to make a new plant. But the new variegated plant might try to revert to all-green foliage because the mutation isn't stable. If left, this all-g...
an outbreak of spots on the leaves. The dark marks are often surrounded by a pinkish-purple ring.Promptly remove and destroy all infected leaves, both on the plant and on the ground. Don't put them on the compost heap. Also improve the growing conditions - add
the season.rosesall year roundMore common problems affecting rosesPreventing rose bloom ballingDealing with rose rustTreating rose powdery mildewRemoving rose leaf rolling sawfly
affect other plantsspring, summerDealing with other problems affecting rosesPreventing rose bloom ballingDealing with rose rustTreating rose blackspotRemoving rose leaf rolling sawfly
The fungal spores that cause rust are spread on the wind, and they can survive over winter on the soil surface, on fallen debris and even objects such as fences and stakes. The symptoms spread in early summer from patches of orange on the stems and leaf stalks of roses to more ob...
's established in your garden it will quickly spread, causing particular problems when it appears in the lawn, as it's difficult to remove. A plant with shamrock-like leaves and white flowers, that spreads quickly via runners, and smothers other plants
tricky weed to eliminate from the garden, as it's difficult to remove the whole plant from the ground. It's best to get rid of it when it's young, before it's had time to spread. Creeping buttercup is easily recognisable by its glossy yellow flowers
remove plants in April or September, then fork over the area and replace soil, re-sowing or turfing where necessary. In a lawn, bed or border, spot-treat patches of the plant using a total weedkiller, such as glyphosate. For best results, bruise the plant
and replace the affected turf in order to deal with it effectively.In lawns, use a weedkiller such as a 2, 4-D-based herbicide to remove self-heal. Apply in cool, moist, calm conditions when there is least risk of accidentally damaging nearby garden plants