Planting calendar
May Planting Guide for Phoenix, AZ: Raised Beds, Containers & In-Ground Gardens
In Phoenix during May, focus on heat-tolerant vegetables and herbs for raised beds, containers, and in-ground gardens. Plant warm-season crops now and prepare for the intense summer heat by selecting drought-resistant varieties. Avoid frost-sensitive plants that struggle in high temperatures.
Plant now (quick list)
Okra, Sweet potatoes, Eggplant, Peppers, Melons, Cowpeas, Basil, Sunflowers
Plant now
- Okra
- Sweet potatoes
- Eggplant
- Peppers
- Melons
- Cowpeas
- Basil
- Sunflowers
- Malabar spinach
- Southern peas
Start indoors
- Winter squash
- Pumpkins
- Tomatoes (for late summer transplant)
- Chilies
- Herbs like cilantro and parsley
Avoid
- Lettuce
- Broccoli
- Cauliflower
- Spinach
- Peas
- Cool-season leafy greens
- Potatoes
- Radishes
Next 2 weeks
- Mulch heavily to retain soil moisture
- Water early morning or late evening
- Monitor for heat stress on young plants
- Harden off indoor seedlings before transplant
- Apply balanced fertilizer to established plants
- Check containers for quick drying soil
- Prune damaged leaves to improve airflow
- Use shade cloth during peak afternoon heat
FAQs
Can I plant tomatoes outdoors in May in Phoenix?
It's better to start tomatoes indoors or purchase established seedlings to transplant later in summer, as May's heat can stress young plants.
How often should I water my raised beds in May?
Water deeply 2-3 times per week, adjusting frequency based on soil moisture and container size to prevent drying out.
What are good herbs to grow in containers during Phoenix's May?
Basil, oregano, rosemary, and thyme thrive well in containers with ample sunlight and regular watering.
Is it necessary to use shade cloth in May?
Yes, providing shade during peak afternoon heat helps protect young or heat-sensitive plants from sunburn and stress.
Can I plant cool-season crops in May?
Cool-season crops generally do not perform well in Phoenix's May heat and should be avoided until fall.
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