Winter Gardening Tasks for June
We have created a comprehensive monthly guide of top gardening tasks for your winter garden.
If did not plant any vegetables during winter, don’t let beds sit empty and exposed. It’s worth sowing a ‘green crop’ to add nutrients into the soil and protect beds over winter. Green crops help improve soil structure and provide organic Nitrogen naturally. Sow common lupin and mustard directly into the soil. Once they have grown 30cm and before they flower, pull up the plants and chop them into pieces with a spade, then dig them back into the soil. Leave them to break down in the soil for 6-8 weeks before you plant anything new.
It’s the last month for planting strawberries. Space new plants 120-200mm apart into mounded soil 200mm above the existing soil level. This ensures adequate drainage and most importantly, enhances the early warming of the soil in spring.
Great growth has now ceased, and light mowing should only be needed every 3-4 weeks. Check lawns regularly for wet spots which may require additional drainage, which is probably better carried out during dry summer months.
Ornamental Trees and Shrubs
Garden Centres have the best range of plants in June and July so an excellent time to buy! Always be fussy when selecting new plants. Ensure they are new, healthy, and not root-bound, and are the right plant for the position you are going to plant them in. Avoid overcrowding in your garden as trees and shrubs can often grow a lot bigger than what is written on the label.
Rose Pruning commences
Apart from the odd late-flowering rose e.g. iceberg, most roses have now shed their leaves and can be pruned. Remove all dead or diseased wood, remember most rose bushes, even though quite healthy, will have some deadwood.
Prune to outward-facing buds and remove any wood that is thinner than pencil thickness. If some plants have a lot of dead/diseased wood, it is advisable to remove the specimens and replace with new rose bushes. With climbing roses, train the main leaders (growing up from the ground) on a horizontal axis as this encourages the production of flowers. With all roses, a spray with copper compound after the completion of pruning helps minimise reinfection of fungal disease in spring.
Pruning Fruit Trees
June is the main month for pruning existing fruit trees and purchasing and planting new ones. Use our Fruit Tree and Berry Guide for planting tips.
When pruning young pip and stone fruit trees, aim to create a strong structure that will support the weight of fruiting wood in future years. With older, mature fruit trees, remove inward growing branches, reduce the height of trees (for harvesting and maintenance) and remove any overgrown branches. Where there are signs of damage or disease, remove these branches.
Pruning Berry Fruit
All these berry fruits (raspberries, boysenberries, loganberries, gooseberries) are very vigorous growers requiring the removal of all old-growth and some of the same season's canes where they are not required. Tie new canes to the existing wires or framework. Be careful to remove any diseased plant material.