What to Do in the Garden This Week - June 18th

AlanGardenMaster
Published on June 18th 2020
77
A close up of a pepper plant
As we approach the longest day, we can now look forward to delicious fresh harvests. This week, roses and early herbaceous perennial plants should be looking fantastic, some of your indoor plants will benefit from being outside, and I hope that you will spend lots of time out in your garden!

Home grown veg

  • Plant winter maturing Brassicas sprouts, winter cabbage, kale and purple sprouting broccoli) in gaps where early peas and beans have been harvested. Firm them in well, which will not only make them more stable but will produce a better quality harvest.
Sprouts on a plant
  • Snap off side shoots from cordon (non-bushy) tomatoes. Do this early in the day when the shoots are full of water. If you use a knife for this, you could spread virus diseases, so snapping is better. Bushy varieties might need some thinning out of crowded shoots.
Tomato plants on an allotment
  • Plant leeks in any spaces where you have cleared early crops. Trim off excess roots to plant them deep so that the base of the stem is bleached white by being buried.
Transplanting leek plants in a garden
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Home grown fruit

  • Pot up and grow blueberry bushes using lime-free potting compost. Plant more than one variety to get better crops and also extend the harvest time.
A blueberry plant a garden
  • Tie new shoots of loganberries, blackberries and other hybrid berries so that they are not in the way of fruit ripening on the older shoots. Tying them up in the middle of a wall or fence-trained plant works well.
  • Thin out fruits of apricot, peach and nectarine trees so that those left grow bigger.
apricot fruits hanging from a branch

The indoor garden

  • Check your indoor plants to see if they have outgrown their pots. Knock them out and look for roots that are crowding the whole pot or growing out the bottom. Move them into larger pots using houseplant compost.
  • Many indoor plants will benefit from the summer outside! Make sure that they are put in a shady spot initially and watered well. Cymbidium orchids, Yucca, Ficus, Clivia and lemons love being outside for summer.
A Clivia plant in a garden
  • Succulents and cacti will be happy outside until late August. Try to find somewhere that is in full sun. As long as they don't blow over, they don't mind a windy spot.
A collection of succulent plants

Hardy border plants

  • Check your roses regularly for greenfly, black spot and mildew. Spray with Rose Clear Ultra or another combined insecticide and fungicide fortnightly.
  • If you don't want to use chemicals, check out Alice's article for some friendly ways to get rid of some common garden pests:
  • Remove dead flower heads - especially from roses - regularly. If you do this on varieties that are capable of repeat-flowering, this will have a significant impact.
  • Brooms and evergreen Californian Lilac can be pruned this month if they need it. Both resent pruning, but this is the time when they will respond. Never cut back into old wood as they hate that. Deciduous Ceanothus will respond well to being cut back very hard, but not until winter.
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