06/12/2026
June Gardening Checklist
✅ Plant Warm-Season Crops
Now is the time to plant corn, peppers, squash, melons, and tomatoes. The soil is warm and the risk of frost is minimal.
✅ Protect Tomatoes from Blight
Once tomato plants are about knee-high, begin applying a copper fungicide to help prevent late blight. Remember, blight cannot be cured, only prevented.
✅ Water Deeply
Rather than watering a little every day, water thoroughly and less often. Allow the soil to dry about 3 cm below the surface between waterings. Container gardens may still need daily watering during hot weather.
✅ Mulch for Healthier Plants
Apply cedar mulch around flower beds and shrubs, and straw around vegetable gardens. A few centimetres of mulch helps keep roots cool, conserve moisture, and reduce weeds.
✅ Inspect Boxwoods
Watch for signs of Box Tree Moth, including caterpillars, webbing, and chewed foliage. If detected, treat with B.T.K. to help control infestations.
✅ Deadhead Annuals
Regularly remove spent blooms from petunias, calibrachoa, geraniums, and other flowering annuals to encourage continuous blooms and keep your containers looking their best all summer long.