08/24/2026
From Portland Parks & Recreation's Community Gardens:
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While there are still summer crops to harvest, it's also a good time to start thinking about preparing plots for fall. These practices help protect the soil, minimize disease and undesired plant issues, and allow you to start planting earlier next year.
After harvesting, cut back or remove summer crops, dead plants, and undesired plants. Plant materials can be buried (trench compost), chopped up as mulch, disposed of off-site, or composted actively in your plot.
Give soil a rest by planting cover crops or cover with mulch like burlap, leaves, or straw to protect soil over winter. This practice also adds back organic material and nutrients to the soil to help feed next seasons crops. Fava beans (cover crop variety), crimson clover and Austrian field peas are a favorite community garden cover crops because they add nutrients, suppress undesired plants, and are easily incorporated in spring. A mix of grain (rye, oats) and legume (vetch, peas, favas) also work well together and do not become too difficult to incorporate into the soil if done so in early spring (ideally March).
Plant over-wintering crops. It's not too late to direct seed cilantro, arugula, mustard, kale, spinach, or other hearty greens in your garden plot. Garlic cloves, onion sets, peas and fava beans can all be planted through October and overwinter in your garden for early spring growth. Have a look at the Portland Nursery Planting Calendar for more ideas on what to grow this time of year:
https://portlandnursery.com/plant-library/vegetables/veggie-planting-calendar/
Note: This important article is part of the latest Portland Community Gardens Gardener Newsletter โ August 2026