Gardening Calendar Cheat Sheet

Seasonal gardening calendar — planting schedules, harvest times, soil preparation, companion planting, and essential tasks for vegetable and flower gardens.

Last Updated: July 15, 2025

Spring (Mar-May)

TaskDetails
Soil prepAdd compost, test pH (most vegetables prefer 6.0-7.0)
Cool-season cropsPlant peas, spinach, lettuce, radishes, kale — 4-6 weeks before last frost
Start seeds indoorsTomatoes, peppers, eggplant — 6-8 weeks before last frost date
PrunePrune fruit trees and summer-flowering shrubs before buds break

Summer (Jun-Aug)

TaskDetails
Warm-season cropsPlant tomatoes, peppers, squash, beans, corn after last frost
Water deeply1-2 inches/week, morning is best — evening watering invites fungus
Mulch2-3 inches straw/wood chips — retains moisture, suppresses weeds
Harvest frequentlyPick beans, zucchini, cucumbers daily — more picking = more production

Fall (Sep-Nov)

TaskDetails
Fall cropsPlant garlic, shallots for next year; sow spinach and kale for fall harvest
Clean upRemove dead plants — diseased material goes in trash, not compost
Cover cropsPlant winter rye or clover to protect and enrich soil over winter

Companion Planting

CropGood CompanionsBad Companions
TomatoesBasil, marigolds, carrotsFennel, potatoes, dill (mature)
BeansCorn, squash, radishesOnions, garlic
CarrotsOnions, leeks, rosemaryDill, parsnips
Pro Tip: Know your USDA hardiness zone and last frost date. Planting too early kills more gardens than pests or disease. Find your zone at planthardiness.ars.usda.gov — it's the single most important piece of data for any gardener.
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