When to Plant in Surprise, AZ

Surprise, Arizona, boasts a median last spring frost date of February 12 and a median first fall frost on December 1, providing residents with an impressive 292 frost-free days each year. This extended growing season allows for a diverse range of gardens, from vegetables and flowers to ornamental plants, flourishing in the warm, sun-drenched climate.

As a hot desert (Sonoran) microclimate, Surprise experiences scorching summers with minimal rainfall, creating ideal conditions for drought-tolerant plants. Crops like tomatoes, peppers, and eggplants thrive in this environment due to their love for heat. However, cool-season crops such as lettuce and peas often struggle, as they are sensitive to heat and may bolt prematurely.

What to plant now in Surprise

Spring: Start planting warm-season crops such as tomatoes and peppers by mid-March, benefiting from the frost-free days after February 12, ensuring strong growth and harvest throughout the warmer months.
Summer: This is the time to focus on heat-loving plants like basil and squash, which can be sown directly in June. Remember to provide enough water and ensure they are well-mulched to conserve moisture.
Fall: Cool-season vegetables like kale and spinach can be planted around the first week of October, as the hot desert climate allows for a robust harvest before the first fall frost on December 1.
Winter: Utilize the warmer days to prepare your soil and plan for spring planting. Starting seeds indoors in late January for crops like tomatoes will provide an early start before the frost-free period begins.

In Surprise (292 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Surprise

Month	What to do
January	January is ideal for planning garden layouts and ordering seeds. Begin starting seeds indoors for heat-loving plants like tomatoes and peppers to prepare for the nearing frost-free season.
February	As February approaches, monitor the weather for warm days as the last frost typically arrives around February 12. Prepare your garden beds for spring planting as the frost date nears.
March	March is the time to plant spring favorites directly in the garden. Warm-season crops like tomatoes, peppers, and zucchini can be planted after February 12, allowing early growth.
April	April brings the full bloom of spring. Ensure consistent watering as temperatures rise. It’s an excellent time to interplant fast-growing herbs alongside your main crops.
May	In May, monitor the growth of your plants. Mid to late May can be optimal for planting additional rounds of warm-season crops, especially if you’re looking for staggered harvests.
June	June ushers in the peak heat. Plant summer-friendly crops like squash and corn while ensuring adequate watering and mulch to prevent evaporation.
July	In July, vibrant growth continues amidst the heat. Take care to monitor for pests and diseases that thrive in the warm weather, focusing on your watering routine.
August	August often sees the highest temperatures. Consider planting fall crops like beets and radishes by the month’s end, ensuring they establish before the cooler months approach.
September	September marks the transition from summer to fall. Begin planting cool-season crops such as broccoli and carrots, taking advantage of the still mild temperatures.
October	In October, it's time to plant your fall garden. Start sowing leafy greens and other cool-season vegetables as the first frost on December 1 approaches.
November	November is a crucial preparation month. Harvest late fall crops while completing soil amendments for winter garden readiness, particularly for next spring's growing!
December	December signals the arrival of cooler weather, with the first fall frost typically on December 1. Use this time for garden cleanup and planning future crops as temperatures cool.

Frost dates for Surprise ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
85379	February 12	December 1	9b
85374	February 12	December 1	9b

FAQ

When is the last frost in Surprise?

The last frost in Surprise typically occurs on February 12, making it essential for gardeners to time their plantings carefully to avoid damage to tender crops.

What vegetables grow best in Surprise?

Vegetables like tomatoes, peppers, and eggplants thrive in Surprise due to the hot desert (Sonoran) climate. Their ability to flourish in heat makes them garden favorites.

When should I plant tomatoes in Surprise?

Tomatoes should be planted in mid-March after the last frost date of February 12, taking advantage of the long frost-free period to ensure a bountiful harvest.

Can I garden year-round in Surprise?

Yes, gardeners can grow year-round in Surprise. The hot desert (Sonoran) climate provides 292 frost-free days, allowing for both warm-season and some cool-season crops.

How does Plan My Garden help Surprise gardeners?

Plan My Garden offers tailored advice for Surprise gardeners, helping them maximize their growing potential with tips on planting schedules, crop selection, and climate-specific strategies.