June in the Garden: Keep Your Soil Happy All Summer Long | Hortiwool

Summer is here and if you're a gardener, June is one of the most exciting months of the year. The longest day is just around the corner (21st June), the borders are bursting into life, and there's no shortage of jobs to keep you busy. But with all that sunshine and warmth comes a challenge that every gardener knows: keeping your soil in good shape in the heat.

Here's our Hortiwool guide to making the most of June in the garden and why what's underneath your plants matters just as much as what's above them.

June's Big Problem: Moisture

June might feel lush, but your soil is quietly losing water. Plants use around 25mm of water every week, and by mid-June those winter reserves begin to run dry. Combine that with the fact that summer rain often evaporates before it reaches plant roots, and you've got a recipe for stressed plants and disappointing harvests.

The traditional answer is to water more, but that's time-consuming, expensive, and often wasteful. A smarter solution is to reduce moisture loss in the first place, and that starts with what you put on top of your soil.

Hortiwool tip 🌱💡Our wool mulch acts as a natural insulating blanket for your soil, locking in moisture, reducing evaporation, and keeping roots cooler on hot days. It's the simple switch that makes a real difference through the summer months.

What to Sow and Plant This Month

June is a brilliant time for succession sowing, keeping crops coming in waves rather than all at once. Keep sowing salad leaves, beetroot and carrots for a continuous harvest through the summer. If you haven't already, now's the time to harden off and plant out runner beans, French beans, squash, courgettes and tomatoes.

When transplanting, give new plants the best possible start by mulching around their bases as soon as they go in. This settles them into their new home, protects vulnerable roots, and means you can water less frequently, always better than a little and often.

Your first early potatoes should also be ready to dig up this month. Check a couple first, if they're on the small side, leave them a little longer before harvesting the rest.

Feeding for Results

June is high season for hungry plants. Feed tomatoes and flowering container plants fortnightly with a high potash feed to encourage fruiting and blooming. Container displays and hanging baskets benefit from a liquid feed every few weeks, they can't draw nutrients from the wider soil, so they need you to top them up.

Don't overlook the veg patch either. Beans and courgettes in particular are thirsty, heavy feeders. A good layer of mulch around their stems will help retain the moisture and nutrients they need to really perform.

Pruning and Tidying

Once your spring shrubs have finished flowering, give them a tidy prune to encourage healthy new growth. Wisteria also gets its summer prune this month; cut back the long whippy shoots to five or six leaves to keep it under control.

Hedges like box, hornbeam and privet will be putting on fresh growth. Trim them now for a crisp, neat look that lasts through summer.

The Lawn in June

The grass will be growing strongly now, so aim to mow once a week. In dry spells, raise the blade height and mow less frequently. Close cutting stresses the grass when it's already struggling for water. If you have a patch you're not using, consider leaving it uncut for a few weeks; long grass is a haven for insects, bees and other beneficial wildlife.

Why Wool is June's Secret Weapon

At Hortiwool, we believe the best gardens work with nature and there's nothing more natural than wool. Our wool-based horticultural products are designed to do what synthetic alternatives can't:

• Retain moisture: reducing watering frequency by up to 25%
• Regulate soil temperature: keeping roots cooler in heat and warmer in cold snaps
• Release nutrients slowly: as the wool breaks down, it feeds the soil naturally
• Suppress weeds: less competition means healthier, more productive plants
• 100% compostable: no plastic, no waste, no guilt

Whether you're mulching around courgettes, lining hanging baskets, or protecting newly planted shrubs, Hortiwool products are the sustainable choice that pays back all season long.

Have a question about using wool mulch in your garden this summer? Get in touch with the Hortiwool team, we're always happy to help - hello@hortiwool.com

And don't forget to share your June garden photos with us on social using #Hortiwool.

Happy gardening, from all of us at Hortiwool. 🌱