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scrambling through the daisy-like plant fleabane, which will flower all summer.March - April July - September40 minutesAlpine strawberry plants x3Mexican fleabane, Erigeron karvinskianus x2Large wall potMulti-purpose compostCrocksFix the pot securely

-infection. This is particularly important in autumn when the spores can overwinter on fallen leaves to contaminate seedlings or new growth in spring. Prune out infected growth and maintain an open centre to shrubs to allow good air circulation through the plant.Spray the plant

If you're short of sun in your garden but want an interesting summer display, try this rich blend of foliage plants. Both the plectranthus and begonias perform well in shade.April - JuneJuly - September20 minutesBegonia rex x2Purple

.When planting aloes, make sure you use a really gritty compost mix as they like a well-drained soil and don't survive if their roots are constantly wet. Aloes can be overwintered on a windowsill or in a greenhouse.More contemporary container displaysCreating a

. Plants are also able to overwinter.Small short-lived annual plants which spread rapidly by means of small seeds dispersed from spring-like seedpods. Remove young plants before they get a chance to flower and set seed. Pull them out individually by hand

June - August20 minutesRue, Ruta graveolens 'Jackman's Blue'Miniature patio roses x2Pale green thyme, Thymus pulegioides 'Foxley'Garlic chives x3Small lavender, such as 'Munstead' x3Window boxCrocksPeat-free multi-purpose compostPlace the crocks

, such as Eschscholzia californica 'Thai Silk Lemon Bush' x5Bidens ferulifolia x2Portulaca oleraceaLarge potCrocksMulti-purpose compostCover the bottom of the pot with crocks, then fill two-thirds with compost.Plant the osteospermum in the centre of the pot encircled

by a sea of blue campanula flowers. March - JulyJune - August20 minutesMyrtle, Myrtus communis subsp. tarentinaCampanula portenschlagiana x2Small window boxCrocksLoam-based compost, such as John Innes No. 3Cover the bottom of the window box with crocks

Rose powdery mildew is a fungus that produces airborne spores from infected stems or buds on roses. After overwintering on your plants, the disease is most likely to flare up if the roots are in dry soil and the leaves are in humid air - conditions

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