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Japanese knotweed

By Gardeners' World on 19/10/2011 17:37:41

. It spreads by sprouting from thick, woody rhizomes, and can grow 1.2m in one season. Winter is the only time of year that offers a reprieve, but for the rest of the year it's a plant that needs tough handling as soon as it appears. This weed is especially


Pineapple weed

By Gardeners' World on 19/10/2011 17:43:55

. all over the garden, but particularly in lawnslate-spring to autumnMore advice on removing weedsDockWillowherbMeadowgrassCouch grass


Vinca or periwinkle

By Gardeners' World on 19/10/2011 18:00:10

Vinca major or periwinkle is a pretty, low-growing plant often with pale blue flowers that is used as a ground cover plant because of its mat-forming properties. However, it can be very invasive, and will rapidly spread around the garden


How to prune your plants

By Gardeners' World on 20/07/2011 15:07:36

strong new shoots from the base. You may need to use long-handled loppers for more leverage if the wood is thick and tough.To rejuvenate old shrubs or coppice shrubs that are grown for the colour of their stems, hard prune all the stems down to 10cm - 15


Acer tar spot

By Gardeners' World on 10/10/2011 11:32:51

a recommended fungicide, containing either a Bordeaux mixture or copper, and spray before signs of infection and repeat at 10-15 day intervals.acersearly summerMore advice on growing acersPlanting an acer in a potAcer inspirationPlanting a small tree


Apple and pear scab

By Gardeners' World on 10/10/2011 11:34:22

Apple and pear scab is most prevalent in mild, damp seasons. The fungus overwinters on fallen leaves in the form of spores, which can be splashed by rain or carried in the wind to infect newly emerged shoots in spring. Overwintering can also occur on infected stems and branches. ...


Clematis wilt

By Gardeners' World on 18/10/2011 11:03:01

Clematis wilt is caused by a fungus that enters the plant through a wound made by an insect or an abrasion, such as rubbing from a plant tie. It's spread by water splash, and blocks the uptake of water in the stems, causing instant collapse. Infected foliage must be disposed of i...


Aphids

By Gardeners' World on 18/10/2011 11:18:16

of the plant, attracting black sooty mould, which inhibits photosynthesis and deprives the plant of energy.Young tender growth is vulnerable to aphid attack. These tiny insects (1mm-7mm long) are usually green or black and breed fast, smothering the plant


Capsid bugs

By Gardeners' World on 18/10/2011 14:36:54

flower buds might never open, or do so unevenly.When disturbed, the bugs quickly drop to the ground or fly away, so you'll have to be quick if you want to catch and squish them. Remove their hiding places by keeping the area under plants free of debris


Caterpillars

By Gardeners' World on 18/10/2011 14:39:30

anythingearly spring, summerMore common garden pestsLeatherjackets on lawns, brassicas, strawberries and ornamental plantsElephant hawk moth on fuschia plantsWhitefly on greenhouse plantsMullein moth - affecting verbascum, buddleja and figworts.


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