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10 Essential Gardening Tips for a Vibrant Summer Garden in June

CandideUK
Published on June 13th 2021
5
Orange daisies by Westbury (All rights reserved)
A group of colorful flowers
June holds the first glimpse of true summer garden potential. Building upon the fresh spring growth, see your plants take off this month, with huge leaps in growth, leading onto stunning floral displays.
There are lots of things to look forward to in June. Hot summer days, BBQs, freshly-picked flowers, with longer days to relax outside.
The summer solstice falls on the 21st of June, meaning our days are extended with extra light evenings. Although this means more time for your plants to flourish, they might need a little bit of extra help to stay lush and vigorous.
To help you keep the garden in tip-top shape this summer, we've chosen 10 essential gardening tips for creating a productive, vibrant garden in June.

1) Plant fresh summer blooms

You might be wondering if there is still time to pack your green space with colour and scent. Well, the answer to that question is, yes! June is a fantastic time to refresh your borders and beds with crisp blooms.
For a quick splash of colour in your beds and borders, choose bedding plants.
For bright, red-hot borders with a tropical feel, try the following combination:
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For a romantic yet more traditional flower display, try these:
If you want to start thinking about blooms for next year, plant Delphinium, Hollyhocks and Lupins

2) Deadhead plants for prolonged summer blooms

This month, good plant maintenance is key! Cut off flower heads when blooms start to look tired. Not only will this promote lush and healthy growth, but your plants will also thank you with the gift of more blooms, creating long-lasting, abundant summer displays.
Top plants to deadhead this month:

Rhododendron

Rhododendron spp.

Camellia

Camellia spp.

Lilac

Syringa spp.

Mexican Orange Blossom

Choisya spp.

A red rose on a Rosa plant

Rose

Rosa spp.

A close up of the purple flowers surrounded by the fresh green leaves of a Hebe

Hebe

Hebe spp.

A close up of the purple flowers of a lavender.

Lavender

Lavandula spp.

Peony

Paeonia spp.

Poppy

Papaver spp.

Spurge

Euphorbia spp.

A group of multi-coloured lupin flowers.

Lupin

Lupinus spp.

A close up of the purple flower of a Delphinium.

Larkspur

Delphinium spp.

Lily of the Valley Bush

Pieris spp.

A close up of some purple Buddleja flowers in a garden

Buddleia

Buddleja spp.

A close up of a pink cosmos flower.

Cosmos

Cosmos spp.

Dahlia

Dahlia spp.

Lily

Lilium spp.

Zinnia

Zinnia spp.

Hydrangea

Hydrangea spp.

Heuchera

Heuchera spp.

African Lily

Agapanthus spp.

3. In the vegetable garden, there is still time to sow

If you've been a busy bee and still haven't got around to sowing your veg seeds this year, not to worry, there’s still time!
If you enjoy fresh leaves and garden salads, get your Beetroot, Lettuce, Pak Choi and Radish in the ground now. It’s always better to leave a little bit of extra greens in case snails and slugs find your patch.
Some of our favourite vegetables to plant in June:
Greenhouses are great for exposed gardens that receive less sun:
Our 3 favourite greenhouses for small gardens:
Learn more about the many things you can use greenhouses for in the article:

4. Watch out for weeds

For those who were ahead of the game with planting vegetables, make sure you check and tend to your vegetable garden regularly this month. Keep an eye out for opportunist plants that can invade your patch and compete with your vegetable plants.
Top tips for dealing with weeds in your vegetable garden:
  • Check the garden regularly for any new spouting plants in the gaps between your vegetables. Pull these up promptly before they have the chance to establish.
  • Weed suppression barriers are a brilliant hack if you don't have the time to keep checking for emerging weeds.
  • Competing plants are less likely to establish if you pack your green spaces with herbaceous plants. Great for wildlife, cramming your garden with Nasturtiums, Borage, and other herbs will help protect your most prized plants.

Explore herbs and edible flowers in the Purble Bloom Seeds online shop:
Learn more about growing a colourful, flower-packed vegetable patch in the article by Kim Stoddart:

5. Summer pruning and training shrubs, trees and climbers

To avoid Silver Leaf, prune back stone-producing trees, such as Cherries, Plums and Damsons. You can also prune back trained Apples and Pear, but if you’re growing for the fruits, avoid cutting branches that have begun setting fruits.
After flowering has finished, lightly prune Rhododendron and Clematis montana. Check on twining climbers, such as Honeysuckle and Clematis, tying and wrapping new growth to their supports.
Shop everything you need to maintain trees, shrubs and climbers here:

Garden Maintenance

Shop
Browse Clematis and learn how to prune different varieties.

6. Feed and mulch your plants

With longer days comes more warmth and light, so your garden plants might need extra care and attention. By applying feed to flower baskets, beds, summer annuals, fruits and vegetables, you'll help maintain healthy, steady growth throughout the summer months. You should try to feed your plants little and often; every other week if possible.
Other options include applying a layer of mulch on beds and borders. Not only will this help provide additional sustenance to your soil media, but it's also a good hack for retaining soil moisture on hot summer days. This might be the preferred method for plants that grow best in moist soil.

7. Watch your plants for pests

Long, warm summer days provide perfect conditions for insect pests. Therefore, from June to September, you should be checking your plants once or twice a week. This is especially true for young plants yet to establish.
Our top tips for keeping pests away from garden plants:
  • Keep soil healthy with manures and feeding.
  • Provide plenty of space for wildlife. You may think this is counterproductive, but a garden brimming with plants and wild areas will ultimately attract larger, high-level predators. With time, predators like birds and hedgehogs will use your garden as a place to forage and help to keep pest numbers low.
  • Spot check plants for pests yourself, taking care to wipe, hose off or squash insects. Be mindful and make sure you know your friends from foes. Watch out for Aphids, Whitefly and caterpillars as you find them. Don't remove Spiders, Lacewings, Earwigs, Ladybirds or Hoverfly larvae.
  • Check for eggs under the leaves of plants.
  • Read our article on 7 alternatives to pesticides.

8. Summer pond maintenance

Give your pond a new lease of life in June using freshwater lilies and other colourful aquatic plants. When installing a pond, aquatic plants are a must-have. They keep the water free of excess nutrients, preventing the build-up of algae. In addition, pond plants provide precious habitat space for aquatic wildlife, generate oxygen, and keep the water cool.
Flowering plants such as Irises are brilliant for feeding pollinators, such as Moths and Bees, whereas Water Lilies and Reeds provide excellent perching spots for Damselflies and Dragonflies.
Shop pond care, plants and accessories here:
Find out more about pond care in Alan’s monthly garden tips!

9) Give Wildlife a Helping Hand

As June is the month we celebrate The Wildlife Trust's 30 Days Wild, our 9th gardening tip is to embrace your wild side. We can assist garden wildlife in June in the following ways:
  • Top up ponds and birdbaths during hot periods. If you don’t have a pond in your garden, you can still help! Provide Tupperware of water for thirsty birds and a dish of water and pebbles for bees and insects. Take a look at these delightful bee baths!
  • Be careful not to step on tired and hungry bees on the floor. Instead, give bees a leg up by placing them somewhere in the garden with plentiful, nectar-rich flowers.
  • Although no-mow May has passed, you should still try to cut less frequently, so pollinating insects can utilise the nectar of Clover, Dandelions and other flower that frequently pop up on lawns.
  • Keep bird feeders full of seed and nuts and hang out fat balls for birds, especially during hot, dry weather.
  • Try and leave holes in fences to allow wildlife to pass through your garden.
Our favourite wildlife-friendly garden items:

10) Indoor gardening

Like our gardens, conditions can heat up inside during June. So it’s important to keep checking your houseplants this month, especially during heatwaves.
Tips for the indoor garden in June:
  • Make sure you're checking whether your houseplants need watering regularly.
  • Feed your houseplants little and often to ensure healthy growth.
  • If you still haven’t repotted plants this year, now would be a great time to do so. To know when is the best time to repot, check the drainage holes for emerging roots.
Find out more on repotting here:
  • Be on the lookout for plant pests. With our windows open more in summer, insect pests can sneak in and seek refuge on your plants. Check plants for tell-tale symptoms, such as yellow leaves or rolled up leaf margins. Similarly, if your houseplant is starting to look a little sad, check beneath the leaves for Aphids or between the stem nooks for Mealybug.
Fill your home with green foliage and explore easy-care houseplants: