Plants in Bloom this month?
Achillea
Ajuga
Aquilegia
Aubrieta
Bergenia
Calendula
Campanula
Centaurea
Cheiranthus
Convallaria
Convolvulus
Dicentra
Fritillaria
Gaillardia
Gentiana
Geranium endressii
Geum
Gypsophila
Iberis
Myosotis
Nigella
Paeonia
Papaver
Phlox subulata
Pulsatilla
Pyrethrum
Scilla
Tiarella
Trollius
Tulipa
Veronica
Vinca
Aesculus hippocastanum
Azalea
Buddleia globosa
Choisya
Cistus
Clematis Montana
Crataegus
Deutzia
Fothergilla
Genista
Laburnum
Malus
Paeonia
Pernettya
Pieris
Rhododendron
Syriga
Viburnum
Weigela
Wisteria
Calla
Caltha
Hottonia
Orontium
Calceolaria
Cineraria
Pelargonium
Primula
Schizanthus
Aphelandra
Chlorophytum
Euphorbia pulcherrima
Saintpaulia
Saxifraga stolonifera
Spathiphyllum wallisii
Late Spring
General Tasks and Maintenance
- Keep plants well-watered as the temperature increases.
- Remove suckers from fruit trees/bushes and lilacs.
- Control slugs using slug pellets.
- Spray fruit trees/bushes, roses and broad beans against caterpillars and aphids.
- Apply liquid fertiliser to plants to provide them with the relevant nutrients.
Late Spring
Houseplants
- Water all plants regularly from now until Autumn.
- Apply liquid fertiliser on house plants.
- Re-pot any old plants that require repotting.
Late Spring
Gardens and in the Garden
Patio areas
- Plant tender plants into pots and containers.
- Complete sowing of any hardy annuals.
- Lift any spring-flowering bulbs after flowering and plant them into your garden.
- Plant hanging baskets and put them into position.
- Water well during dry weather.
Late Spring
Kitchen Garden
Fruit
- Keep an eye out for any pests and control with pesticide spray.
- Water fruit trees and bushes during dry weather.
- Bark ring Apples and Pears to encourage fruiting.
- Feed all fruit trees and bushes and spray with an insecticide to keep pests down.
- Raspberries – Mulch and remove any excess shoots.
- Strawberries – Protect fruits using straw and spread slug pellets.
- Begin to Summer prune vines.
Vegetables
- Potatoes – Cover plants if there is a risk of frost.
- Prepare beds ready for growing Pumpkins and Marrows. Sow seeds later on in the month.
- Tomatoes – prepare the ground for outdoor tomatoes.
- Brussel Sprouts – plant out.
- Sow follow on amounts of summer spinach and salad crops.
- Beetroot – Sow long rooted varieties.
- Runner beans – Sow in the greenhouse and build a structure outside to allow them to climb when planted outdoors.
- French Beans – Sow outdoors.
- Asparagus – Continue to cut.
- Sow sweetcorn.
- Remove cloches for broad beans, carrots, cabbages and lettuces.
- In the greenhouse – Prepare the area to plant out your cucumbers.
Herbs
- Continue to sow more dill, fennel, parsley and chervil.
- Plant out basil seedlings and place them into drills.
- Take cuttings of Sage, Rosemary and Thyme.
Late Spring
Trees, Shrubs and Hedges
Trees and Shrubs
- Begin to plant out shrubs that are tender and ensure that they are well watered.
- Continue to plant evergreens.
- Mulch Lilacs keep them to just one stem as this will help them flower.
- Prune dead heads/flowers. Remove any dead wood.
In the Greenhouse
- INFORMATION COMING SOON
Hedges
- Begin trimming of hedges to keep their shape up until September. Use sheeting to catch any cuttings so that they can be composted.
- Water hedges during dry weather and hoe regularly to keep the weeds down.
Late Spring
Flowers and Plants
Hardy Herbaceous Plants
- Control weeds by hoeing between plants.
- Stake up any plants that are growing tall.
- Water newly planted beds.
Perennials
Carnations and Pinks
- Support plants with canes and stakes if needed.
- Plant out annual carnations.
- Spray plants when you see signs of pests and diseases.
In the Greenhouse
- Pot on perpetual flowering carnations.
- Shade the glass during hot weather.
- Cut blooms and disbud flower stems after flowering.
- Sow seeds.
- Take action as and when against pests and diseases.
Chrysanthemums
- Plant out outdoor flowering varieties.
- Put slug pellets under the plants.
- Discard seriously damaged stools that have overwintered outdoors.
- Fertilise, well water and lightly fork over the bed.
Dahlias
- When the frost has gone, plant out young dahlias.
- Protect young plants if required.
In the Greenhouse
- Keep rooted cuttings in a cold frame and ensure well watered.
- Look out for aphids and spray with insecticide.
Gladioli
- Water well during dry weather.
- Hoe over the soil regularly.
Irises
- Remove dead flowers.
- Water during dry weather.
- Purchase bearded varieties ready to plant out in July and August.
- Scatter slug pellets under plants.
- Cut bearded irises for flower arranging.
- Check bearded irises for leaf spot disease.
Lilies
- Spray insecticide against aphids.
- Keep an eye out for basal rot and fusarium disease.
In the Greenhouse
- Keep aphids down by spraying insecticide.
Roses
- Greenfly – spray with insecticide.
- Black spot – spray with captan.
- Mildew – spray with dinocap.
- Rust – Spray with Zineb.
- Black spot or mildew – spray with benomyl.
- Remove any leaves that have rolled up due to sawflies or caterpillars.
Annuals
Alpines
- Control weeds by pulling by hand or hoeing.
- Trim plants after flowering to prevent seeding.
Bulbs
- Remove dead flowers from hyacinths and daffodils.
- Weed rows and water during dry weather.
Flowers from Seed
- Sow hardy and half-hardy annuals.
- When the frost has gone, plant out half-hardy annuals.
- Water the beds and borders before planting.
In the Greenhouse
- Move half-hardy annuals to cold frames/greenhouse.
- If plants begin to turn yellow, feed with fertiliser.
- Prick out any seedlings when they are large enough to transplant.
Heathers
- Complete planting of heathers.
- Mulch the plants.
Rhododendrons and Azaleas
- Prune any dead flowers.
- Water new bushes when the weather is dry.
- Mulch the plants and bushes.
Sweet peas
- Mulch plants during dry weather.
- Create a climbing structure/obelisk to allow sweet peas to climb up.
- Hoe around the plants regularly.
Late Spring
Greenhouse and Cloches
- Sow cucumbers, melon and sweet corn.
- Sow Cineraria seeds for winter flowers.
- On warm days, shade plants using greenhouse blinds or bubble wrap.
- Provide weekly feed for your plants.
- Water frequently plants when the weather improves.
- Support any tall plants using canes and bamboo sticks.
- Tomatoes – support plants, water, and feed regularly. Remove side shoots as and when you see them.
Late Spring
Pond, Water plants and Rock Plants
- Plant all water plants.
- Remove algae with a small fishing net.
- Thin out any overgrown water lilies and replant if you have room for them.
Late Spring
Lawn
New Lawn
- Cultivate any new areas ready for autumn sowing.
An established lawn
- Feed with lawn feed.
- Continue to mow the lawn regularly.
- To control diseases, apply fungicides.
- Apply weedkiller to keep weeds down.
Late Spring
Wildlife
- Plant bee and butterfly attracting plants to your garden to encourage them to your garden.
