Spring arrives slowly in the Rockies, with snow still possible into May in many areas. But once the soil starts to warm and daylight increases, it’s go-time.

  • Start seeds indoors: tomatoes, peppers, brassicas, herbs
  • Start tilling and amending outdoor garden beds as needed
  • Mid-Late March: Plant peas, kale, and cabbages directly outdoors. They like the cold and will do fine with spring snow. Higher elevations (about 7000 feet) wait till April
  • Clean and sharpen tools
  • Plan your garden layout & order seeds
  • Prune fruit trees and shrubs (before bud break)
  • Begin waking up compost piles
  • Start hardier crops indoors: kale, lettuce, broccoli, cabbage
  • Amend garden beds with compost or organic matter
  • Direct sow hardy vegetables (in Zone 5): spinach, peas, radishes
  • Clean up winter mulch from perennial beds (but leave leaf litter for pollinators until temps are consistently above 50°F)
  • Transplant hardened-off seedlings outdoors after last frost
  • Direct sow carrots, beets, onions, lettuce, and other cool crops
  • Plant perennials and cold-hardy annuals
  • Start watering schedule
  • Begin fertilizing early crops
  • Watch for late frosts and be ready with row covers

Key Tasks: Seed starting, soil prep, cold-hardy planting, perennial cleanup