Every purchase supports the work of the RHS Every purchase supports the work of the RHS

RHS monthly jobs

potatoes

Earth up potatoes in open ground and containers as the foliage reaches 23cm (9in) to prevent green tubers

summer-flowering bedding

Plant up containers with summer-flowering bedding, adding controlled-release fertiliser into the compost

lily beetle

Remove red lily beetle adults and larvae from lilies and fritillaries. As a last resort, Provado Ultimate Bug killer is available to control them

summer dryness

Do not get caught out by early summer dryness – recently planted trees and shrubs, including fruit, need regular watering for the first two growing seasons to establish well

Deadhead

Deadhead rhododendrons – pinch off each spent flower carefully, avoiding damage to developing buds just below

Sow

Sow carrots, radishes, beetroot, lettuce and spring onions successionally for continuous cropping

Kitchen garden

  • Net culinary cherries against birds
  • Harvest up to half the stems of established rhubarb over the season
  • Remove raspberry suckers encroaching onto paths or between rows

Ornamental Gardens

  • Prune overgrown camellias as they start putting on fresh growth. Cut to young sideshoots which will flower next year
  • Coppice or pollard juvenile foliage from eucalyptus for floral arrangements
  • Prune spring-flowering shrubs such as Forsythia and Philadelphus

Greenhouse

  • Put up shading to limit temperatures inside to 25-27 °c (77-81°F)
  • Detach baby rosettes from succulents such as Echeveria and pot into small containers of gritty compost

Pest and Disease Watch

  • Apply slug and snail controls to dahlias as they put on new growth
  • Use insect mesh to prevent damage to carrots by carrot fly