IN THE FLOWER GARDEN
- Plant up containers, hanging baskets and planters now the risk of frost has passed. If you have them growing on in a greenhouse move them outside to their final position.
- Continue to thin out hardy annuals if they’re overcrowded.
- Lift and divide clumps of snowdrops and bluebells once the leaves start to yellow.
- Lift and divide overcrowded clumps of bulbs (tulips, daffodils).
- Keep newly planted trees and shrubs well watered whilst they establish.
- It’s not too late to sow seeds of annual plants
- Now there is space on windowsills again, think about sowing biennials (Sweet William, Coneflowers) for next year.
- Pinch out the tips of your Fuchsias to encourage a bushy plant and more flowers.
- If any of your hanging basket plants have become leggy or misshapen, simply trim the excess off – this will encourage bushy growth.
- As soon as your sweet peas start to flower, keep picking them to encourage more blooms.
- Dead-head your roses if they are repeat-flowering types. Otherwise leave the seed heads on for decoration.
- Dead-head and cut back oriental poppies after flowering. Cutting them close to ground level will stimulate new foliage.
- Towards the end of June, if your hardy Geraniums have finished flowering cut them back to encourage new foliage and flowers.
- Cut back bulb foliage as soon as it has died down naturally.
- Stake tall or floppy perennial plants to prevent wind damage.
- As new shoots grow, tie in and train climbing plants such as honeysuckle and clematis to their supports. Use Soft-Tie Wrap for a secure tie.
- Harvest flower heads from your lavender plants to use in baking or as a garnish to your meals!
IN THE VEGETABLE GARDEN
- Continue to earth up potato plants as they grow. If you’re growing potatoes in bags simply add more compost to half way up the plant stem.
- Harvest salad crops and resow every 2 weeks for a constant supply of tasty leaves.
- Harvest early potatoes – these are normally ready from 10 weeks after planting.
- Plant out tender vegetables such as squash, tomatoes and sweet corn now the risk of frost has passed.
- When planting out cabbages, use cabbage collars to prevent cabbage root fly attack.
- There is still time to plant runner beans – sow them directly in the ground now.
- Protect crops from carrot fly by covering with garden cloth.
IN THE FRUIT GARDEN
- Start to prune your plum or cherry trees now.
- Although fruit trees will naturally shed some fruit (called the ‘June drop’), aim to thin out congested branches further for bigger and better fruits.
- Protect any developing fruits from birds and squirrels by placing netting around your plants.
- If you have plants fruiting in containers, make sure you give them a high potash liquid feed to keep plants healthy and productive.
- Top-dress patio dwarf fruit trees with fresh compost and a slow-release fertilizer.
- Peg down runners on your strawberry plants to create more plants for next year. If you don’t need more plants simply remove the strawberry runners completely.
IN THE GREENHOUSE
- Continue to harden off half-hardy bedding plants.
- Open vents and doors on warm days.
- Check plants daily and water them if the soil is dry.
- Use blinds or apply shade paint to prevent the greenhouse from over-heating in sunny weather.
- Damp down your greenhouse on hot days to increase humidity and deter red spider mites.
- If you are experiencing prolonged dry weather, set your mower blades higher to reduce stress on the grass.
- Water your lawn during hot weather, particularly newly seeded or turfed lawns. Do not allow new lawns to dry out.
- Warm weather encourages rapid weed growth – apply specific lawn weed killer to tackle this problem.
- Feed your lawn with a special lawn fertilizer to encourage healthy green growth.
- Recut any lawn edges if needed. Try installing lawn edging to make future maintenance easier.
OTHER IMPORTANT GARDEN JOBS
Water your containers and baskets well in hot weather. Start to feed them with a balanced liquid fertilizer every 2 to 4 weeks.
- To conserve water, water the soil rather than the plants and make ‘ponds’ around individual plants so that the water can really soak in, ideally wetting the soil quite deeply (about 10 inches). Thorough watering like this supports plants for 14 days, but merely wetting the surface wastes water, encourages weeds and can lead to surface rooting making the plants more vulnerable.
- Keep an eye out for white powdery mildew on plants. If possible, remove the affected parts and spray with a fungicide to prevent further spread.
- Look for aphids on the underside of leaves – rub them off by hand or spray with an insecticide to prevent them multiplying. Alternatively try using a natural pest control such as Lacewing larvae
- Keep an eye out for scarlet lily beetles on your lilies – remove and crush any you see. Also check for the sticky brown larvae on the underside of leaves.
- Prevent slugs from attacking your young plants by using a good slug bait
- Clip evergreen hedges such as Privet, Box and Yew whilst they are in active growth.
- Turn the compost in your compost bins every month to keep it well aerated
- Keep bird baths topped up in hot weather.