June might feel like the peak of summer, but there’s still plenty of sowing and planting you can do, especially if you’ve got a polytunnel on your side. The soil is warm, the risk of frost is behind us, and crops are in full swing.
If you’re looking for the best vegetables to grow in June, here’s what to focus on this month:
Salad Leaves
Quick, easy, and great for repeat sowings.
Try:
Rocket
Mizuna
Lollo Rosso
Little Gem
Mustard greens
🌱 Sow every couple of weeks for continuous harvests. Polytunnel conditions mean you’ll avoid bolting and get faster regrowth.
Courgettes and Cucumbers
Now’s your last call to plant these summer staples.
- Courgettes thrive in rich soil and appreciate the extra warmth of a tunnel
- Cucumbers grow best when trained vertically, ideal in the EasyBuild Polytunnel where you can fit support bars with ease
👉 Water consistently and feed regularly once fruit sets
French & Runner Beans
Climbing beans are perfect for sowing now. They’ll catch up quickly with the warm soil.
- Sow direct or transplant
- Provide sturdy supports
- Pick regularly to keep them productive
Spring Onions & Beetroot
These fast growers are perfect for succession sowing through June.
- Beetroot can be sown direct every few weeks
- Spring onions grow well in modules or direct in rows
- Thin for space and harvest young
Herbs: Basil, Coriander, Dill
Tender herbs love June’s warmth.
- Basil thrives in the heat – perfect for polytunnels
- Sow coriander and dill little and often
- Keep well-watered and harvest regularly
Chillies & Peppers (Plant Out Time)
By June, your greenhouse-grown or windowsill chillies and peppers should be ready for their final home.
- Move them to growbags or into polytunnel beds
- Stake plants early to support fruiting
- They’ll appreciate the consistent warmth and light
Carrots & Turnips
Quick-maturing carrot varieties can still go in now, ideal for smaller gaps in your beds.
- Sow directly into fine soil
- Protect early on with mesh to avoid pests
- Harvest while young for best flavour
Succession Crops to Keep Going
These are the fast-maturing, easy-to-grow crops you can sow throughout June:
- Radish
- Lettuce
- Spinach (bolt-resistant types)
- Dwarf French beans
- Kohl rabi
Planning Ahead? Think Autumn Crops
Now’s the time to sow crops that will mature in late summer or early autumn, especially under cover.
- Try calabrese, kale, winter cabbage or leeks
- Start in modules now for planting out in July
- Your polytunnel will extend the growing season well into autumn
Why Grow in a Polytunnel?
June is a brilliant month for polytunnel growers, and an even better time to become one. You’ll get:
✅ Faster growth
✅ Wind and pest protection
✅ Better yields
✅ A longer growing season
Design Your Own in Minutes!
Thinking of getting a polytunnel? Don’t just take our word for it, try the EasyBuild Configurator and compare for yourself.
We built EasyBuild to make polytunnel growing easier, tougher, and better value. Looks like it worked.
