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There are several different viruses that affect tulips, each with slightly different symptoms. Tulip breaking virus causes streaking or marking of purple, pink and red tulips, usually on the late-flowering cultivars. White and yellow tulips aren

in height.Pennisetum 'Red Buttons'A striking blue grass with mounds of slender foliage and lovely silvery flower heads. Poa labillardierei makes an elegant addition to borders.Poa labillardiereiWhere to see grassesKnoll GardensRoyal Botanic Gardens, Kew

.Acer griseum, Paper-bark maplePrunus serrula is perfect tree for small gardens. It provides year-round interest, producing small, white flowers in spring, followed by small fruits and red or yellow leaves in autumn. Its shiny bark remains a deep red throughout

flowerheads in summer. It will perform equally well in a sunny border or a container.Jarava ichuThis easy-to-grow bearded iris, with butter yellow and lavender petals, will flower from late-May to mid-June.Iris 'Lullaby of Spring'This short, smoky yellow iris

Acid-loving azaleas grow happily in pots of ericaceous compost, so you can enjoy these plants even without acid garden soil. They come in a wide range of colours, from deep red and pink to orange, yellow or pure white. Some even have a wonderful

Mixing contrasting colours, such as lime-green leaves and wine-coloured flowers, is always eye catching. Ipomoea 'Sweet Caroline' is grown for its unusual bright-green foliage and Calibrachoa 'Million Bells Cherry' gives an extra zing. We also added

Rust fungus is the curse of hollyhocks. The undersides of the leaves are often peppered with bright yellow or orange-red rust spots with corresponding beige-yellow splodges on the upper surface. Eventually, it affects the whole plant, with leaves

's better to stick to just one or two different materials to ensure a coherant final display. When making your selection, take your cue from the style of the house and garden. For example, red brick buildings are enhanced by terracotta containers, while a

it with one or several different varieties of thyme for a good mix of colour and flavours.April - MayJune - September20 minutesDwarf lavender, such as 'Kew Red' or 'Munstead'Thyme plants x5Hanging basketCompostWater-retaining crystalsSlow-release fertiliser

Capsid bugs are sap-feeding pests. The 6mm-long adults vary in colour from green to red-brown, depending on the species. Look for the distinctive diamond shape when their wings are folded. When they feed, they release a toxic saliva that kills off