Gardening Tips for June 2026

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• Warm-Season Annuals - Lobelia, Cleome, Torenia, Zinnia, Bells of Ireland, Cosmos, Angelonia.
• Perennials - Campanula, Salvias, Centaurea montana, Dahlias, Bulbine.
• Shrubs - Abelia 'Kaleidoscope', Fuchsias, Hydrangeas, Hebe.
• Bulbs/Tubers – Begonias, Dahlias, Lillies, Cannas Caladium.
• Seeds - Nasturtium, Morning Glories, Sunflowers, Carrot, Beet, Radish.
• Veggies - Summer Squash, Lettuce, Snap Beans.
• Extras - Bamboo Stakes, Jute Twine, Neem Oil, Velcro Tape, Maxsea Fertilizers.

• Container Gardening – By this time of year, many hand-watered containers may be completely dry. Dig down to make certain that enough water is being applied. Also, when watering containers by hand make sure to water slowly instead of a fast shower (which does not really get into the rootzone where water is needed). A fast and easy way to water some containers is the jug method, Watch The Gardening Tutor’s Video: Two Quick Ways to Apply Liquid Fertilizer to see the Jug Method.
• Dahlias - Create well draining soil for Dahlias by amending the soil with compost. Also, mulch Dahlias with a thick layer (3 to 4 inches) of compost as mulch, avoid pushing compost right up against the stems. Water Dahlias regularly and they will love it! While Dahlias are growing up pinch out the tip leaves at least once to encourage shorter, fatter plants. Remember to stake tall Dahlias early in the growing season. Remove spent flowers (and the stem attached to that flower) to promote more new flowers. Note: Neem Oil is best used as a preventative for powdery mildew. Spray before fungus has started. Spray early in the morning or evening so bees are not around.
• Roses – Fertilize most roses monthly with either Bloom Fertilizer or All-Purpose fertilizer depending upon how the rose is looking. If the plant is new or is older and leaves are sparse, use all-purpose but if the plant is full of leaves and you want to encourage more blooms, use bloom fertilizer. Mary uses Maxsea.
• Pruning – Remove Suckers from shrubs and trees, such as Harry Lauder’s Walking Stick. Watch The Gardening Tutor’s Video: How to Remove Suckers. Remove spent flowers from Fuchsias so they keep blooming well. Shear Erigeron to three inches to refresh them. Watch The Gardening Tutor Video: Shearing Plants to Encourage Flowers or Foliage. Remove spent flowers from Rhododendrons, carefully snap the old flower off between the new buds that are just underneath the old flower. Prune back long Wisteria stems to six nodes and train new leaders where you want them to go. Wisteria can be tricky to prune well, when you're ready to learn how to prune Wisteria or other plants in your garden Contact Mary to Schedule an Appointment.  
• Mulch - Most plants grow much better with a layer of compost as mulch. Even if your garden has bark-type mulch, applying a layer of compost mulch under the bark will make plants happy. Move the bark away, place a thick layer of compost (about 3 inches) around and under the plant, avoiding pushing the mulch up against the trunk.
• Weeding – Weeds are such a drag but staying ahead of removing them is key to a happy garden (even though it’s trending that everyone should leave the weeds). Weeds can harbor pest insects and fungal disease so removing the weeds is important. Watch The Gardening Tutor’s Video: Weeds How They Grow and How to Mange Them.
• Sunflowers – Can be sown all through summer until the end of August!
• For More June Tips See June 2025 Tips.

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ALL CONTENT and Photos by Mary Frost (no AI).