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June checklist

Winter is officially here, but there is still plenty to do: prep for spring crops, new rose bushes, and new fruit trees to be planted and get winter crops in the ground.

Key points for the month:

  • If you haven’t already planted garlic, get onto it this month. June is the best time to do this. It is traditionally best to plant before the shortest day of the year and then harvest by the longest day.
  • New seasons roses will be in store. Decide which varieties you want.
  • Start pruning existing roses.
  • Plant new deciduous trees
  • Prune deciduous fruit trees.
  • Plan a clean - up spray programme for fruit trees and spray June/early July as the weather allows.
  • Plant new seasons strawberries.

Kitchen Garden

Sow green crops of lupin and mustard in any empty spaces in the vegetable garden for digging into the soil for green manure.

Refresh soil for crops by adding new compost and sheep pellets.

Plant seedlings: broccoli, cabbage, cauliflower, lettuce, Brussels sprouts, silverbeet, spinach, onion. Protect from the cold while they are young.

Sow seeds: spinach, cabbage, cauliflower, broccoli, Brussels sprouts, lettuce, onions, and peas. Transplant to the garden as the weather warms and when they are showing at least two sets of true leaves.

Broad beans can be planted directly in to the soil, stagger your sowing for a continuous harvest.

Feed all vegetables with a liquid general fertiliser.

Plant new rhubarb then lift and divide old crowns.

Tidy up old strawberry beds and prepare for new plants.

Tidy up old strawberry beds and prepare for new plants.

Feed citrus with citrus fertiliser and water it in.

Sprout new potatoes, stand upright in a light dry place for them to sprout ready for planting. Prepare the beds for when they are ready.

Feed all winter vegetables every two weeks.

Protect your cauliflower, broccoli and Brussels sprouts by dusting them with derris dust to protect them from the white butterfly and the diamond back moth. Remember to get to the undersides of the leaves where the eggs are laid.

Get pruning of fruit trees underway as the trees become bare of leaves, remove all debris when you have finished.

Apply clean up spray to bare fruit trees, use copper spray and winter oil to stop bugs and diseases burrowing in for the winter.

Plant new strawberries plants, they will show new leaves in the spring. Feed with blood and bone as you plant.

Garlic can still be planted.

Plant or replace older fruit trees.

Spray citrus trees, with copper oxychloride to prevent brown rot and verrucosis.

Keep weeds under control; attack them when they are small.

Protect seedlings from slug and snails.

Garden Colour

Plant lily (Lilliums) bulbs, they like a sheltered sunny position - they can be left in place for a few years.

Sow seeds: alyssum, calendula, cineraria, cornflower, primula, polyanthus, lobelia, nemesia, stock. Transplant to the garden as the weather warms and when they are showing at least two sets of true leaves.

Plant seedlings: calendula, cineraria, nemesia, pansies, polyanthus, poppies, primula, snapdragon, stock, viola, wallflower. Protect while young from the cold weather.

Lift dahlia tubers and gladioli corms, remove any excess soil and store in a dry place.

Trim autumn perennials and divide if necessary.

Finish pruning all roses; give them a clean-up with a general rose insecticide spray. Remove all fallen leaves from the area around the bottom of the plant to help control the spread of disease.

Trees and Shrubs

If your plants get hit by a frost, don’t prune off the damaged parts, as this will promote new growth that will be at risk again. Wait until all frosts are over before pruning.

Plant new deciduous trees, stake well.

Check your larger trees for any wind damage and prune and seal any larger cuts with pruning paste.

Hydrangeas can be pruned back after the flowers have finished. Also mulch with compost and feed blue flowers with aluminium sulphate and red flowers with lime.

Continue weed control; don’t spray within five hours of rain.

Collect autumn leaves for composting.

Remove moss and lichen from paths as they’ll get slippery in the winter months.

Cover frost tender plants with frost cloth; drape the cloth over but not so it is touching the plants. If it is too close a hard frost will freeze it to the plants.


Growth will now slow down.

Mark areas of poor drainage ready to fix when the ground is drier.