What to do in JUNE

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Earth up potatoes when the foliage exceeds 15cm (6 inches) in height. This prevents any potatoes that are developing near the surface from turning green.


Dead head and feed roses as they finish flowering to encourage a longer flowering season. Check for mildew, aphids and black spot.

Early potatoes can be lifted and eaten as soon as the plants are in flower.


Sow biennials such as sweet Williams and wallflowers in a seed bed for later planting out in preparation for flowing next summer.

Plant out courgettes into ground that has fertiliser or well rotted compost added and allowing at least 1m between plants. Alternatively they can be grown in growbags.


Pinch out the shoots of the leading tips of dahlias and fuchsias in early June to encourage new shoots to grow from the base.

Plant out greenhouse raised Cabbage, Sprouting Broccoli, and brussels sprout.


Finish planting hanging baskets and tubs and water and feed them regularly.

There is still time to sow runner beans. Plant them in well prepared moist and fertile soil and support with canes once they start growing.


Prune spring flowering shrubs such as weigelas and philadelphus to encourage the development of new shoots for flowering next year.

Carrot fly is most active in June. Reduce the risk of an attack by thinning and placing a barrier around the crop.


Flag irises that are crowded can be lifted and divided after flowering. Use only the younger outer parts and discard the central older parts.

If you haven’t planted out tomatoes yet then do so as soon as possible.


Stake and support tall growing annuals.

Thin crops as required, and keep soil hoed between crops to improve water absorption and weed control.


Rock garden plants that have finished flowering can be cut back.




Inspect fruit bushes and trees for pests and diseases, treating them as necessary.


Continue mowing regularly to a height of 25mm. However, if it is very dry, set the blades higher.

Cover soft fruit bushes and strawberries with netting to protect them from bird damage.


If you haven’t fertilised for six weeks consider another application.

Thin stone fruits after June “drop”. Start by removing damaged or misshapen fruits and fruit affected by scab or insects.


Water the lawn if required in dry periods. However, just dampening the surface does more harm than good.

Tie in the new canes of Blackberries and hybrid berries throughout the summer as they are produced.


Bare areas can be seeded. Protect newly sown seed from birds with black thread or clear plastic sheet until germination occurs.




To improve the pollination for greenhouse tomatoes simply tap the flowers.


Remove weeds before they flower and produce their seeds.

Consider sowing plants to give indoor colour during the winter, such as cinerarias, calceolarias and primulas.


Keep ponds free from blanket weed. Remove it as soon as it appears by winding it around a stick.

Pot up any root cuttings and seedlings that were started in the Spring.


Remove self-sown seedlings of Ash and Sycamore before they become established.

Take  semi-ripe cuttings from such  plants as  chrysanthemums,  fuchsias,  clematis, hydrangeas,   cotoneasters, deutzias and philadelphus and root in  a  cold frame  or propagating unit.


Slugs and snails can cause a lot of damage at this time of year. There are a number of control measures including poison and physical barriers such as crushed egg shells spread around your vulnerable plants.

Take leaf cuttings from such plants as African violets and begonias.


Keep the area around trees and shrubs clear of grass.