June Gardening Tips 1st June 2025 Plant out Tomatoes, Courgettes, Pumpkins and Marrows outside. Plant Herbs for BBQ cooking this summer. Mow lawns at least once a week. Stake tall plants to support them. Prune spring flowering shrubs. Harvest first early Potatoes. Why not also buy a garden Mint to add to your Summer Potato dishes. Pinch out side-shoots on Tomatoes and start to feed regularly with Tomorite. Sow Lettuce leaves and don’t forget to add slug pellets and preventive barriers. Spray Roses to control and prevent Aphids, Mildew and Rust. Tie in climbing plants and feed regularly. Feed established lawns and apply a selective lawn weedkiller to remove Daisies and Buttercups. Protect fruit plants with crop netting to keep the birds off. Plant Runner Beans and make supports with canes. Re-pot succulents indoors. Deadhead Roses to promote repeat flowering. Apply shade to glasshouses. Deadhead Lupins. Trim and shape Box and Bay standards. Sow Wallflowers, Winter flowering Pansies and Brompton Stocks. Apply a compost generator to compost bins. Trim hedges. Sow Parsley, Radish, Spring Onions, Beetroot and French Beans. Take cuttings from shrubs for next year’s stocks. Continue to deadhead all hanging baskets and container flowers. Share: