June · Early summer
What to sow in June in Denver
34 crops are in their window this month in Denver — timed to your local frost dates.
Last frost≈ 22 May
First frost≈ 12 Sep
Frost-free days103 days
June averages56°–87°F
Vegetables
21 in season
Amaranth Greens
Direct sow · pinch tips often for a steady flush of tender greens
Asparagus
Plant crowns · resist harvesting until the second or third spring
Bitter Melon
Start indoors · harvest young and green — riper fruit turns bitter
Bush Beans
Direct sow · sow after soil warms; skip cold, wet spring soil
Cardoon
Transplant seedlings · blanch stalks 3-4 weeks before harvest for tenderness
Herbs
11 in season
Basil
Start indoors · loves heat, don't rush it outside before frost
Epazote
Direct sow · cut flower heads early or it self-seeds everywhere
Fenugreek (Methi)
Direct sow · ready to cut in under a month; sow again for more
Garlic Chives
Start indoors · divide clumps every 3 years to keep them vigorous
Mint
Transplant seedlings · spreads aggressively, best contained in pots
Fruit
2 in season
Blueberries
Plant bushes · needs acidic soil and a second variety to pollinate
Strawberries
Plant runners · pinch off first-year flowers for stronger plants