- Keep harvesting cool season crops like asparagus, peas, and spring lettuce
- Seed cool season vegetables and root crops after mid-month (beets, beans, cabbage, carrots, chard, lettuce, onions, potatoes, radishes, turnips...)
- Start warm season melons and squash indoors, to transplant after Memorial Day, when the squash borer has moved on
- Keep seeding lettuce. Start seeding squash, cucs and beans
- Hold the heat lovers like tomatoes and peppers until the end of the month
- Finish seeding annuals
- Resist the temptation to put out heat lovers until the end of the month, when night time temps remain above 50 degrees F.
- Deadhead and begin replacing pansies and primroses as the blossoms fade
- Summer bulbs can be planted
- Plant new roses. Prune one-time blooming roses as they faded and feed.
- Give fall bloomers like asters and mums, a first pinching
Trees & Shrubs
- Plant or transplant trees and shrubs before the heat of summer.
- Prune forsythia, viburnums and other spring blooming shrubs, before they set next year’s buds.
- Cut older branches back to ground level to encourage new flowering branches.
- Prune Clematis montana hybrids after blooming to control size and shape.