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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

Summer is the ideal time to take verbena cuttings. Overwinter the semi-hardy perennials in a frost-free place and you'll have a fresh, healthy supply of verbena plants next year to replace any in the garden that have been killed by frost

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

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

I'm the proud owner of two whopping great carnivorous plants. One was a present to my son from his granddad, the other is a rescue plant (much like our rescue cat!).Right now my greenhouse is looking decidedly miserable. My pepper and tomato plants

In mid-spring, 2mm-long, greenish-brown, adult bay suckers emerge from overwintering. They feed on young bay leaves, turning them yellow and making the edges thicken and curl. The females then lay eggs under the curling edges and the new, young grey

stems of sedumsClear borders and rake up leaves FlowersKeep harvesting root vegetables as they matureOrder seed potatoes, onion sets and shallotsStretch netting over brassicasFruit & vegSow onion seed under cover, and keep warmCheck overwintering plants

when outlined by frost.Cut back the fennel to the soil each year in late winter or early spring, otherwise it could shoot up to 1.8m tall.More ideas for summer colourGrowing summer-flowering plants to attract bees.Choosing plants for late-summer colour.Plant

the plant.After the azalea has stopped flowering the campanulas will keep going well into summer - they'll overwinter happily in their container. Cut them back if they begin to look messy.AdamAzaleas hate being dry, so water them even when they

, moving to a host plant to overwinter. They breed at an alarming rate - females can give birth to live young when only a week old. They are sap-sucking pests and the excess sap is excreted as honeydew. This sticky residue falls on to the lower leaves