Fall / Winter · Beginner · Phoenix / East Valley, AZ
Snap peas and snow peas are one of the most satisfying crops in the Phoenix fall garden — and one of the few you'll be harvesting in January while eating fresh-picked pods right off the vine. Sweet, crunchy, and remarkably easy to grow if you get the timing right.
Peas are strictly a cool-season crop. They germinate best below 70°F and stop producing once temps consistently hit 80°F. In Phoenix, our October-through-February cool season is their sweet spot.
Direct sow peas October 15–31. This gives plants enough time to establish before the coldest December nights slow growth, and they'll be hitting peak production in January and February when our weather is mild and beautiful.
Plantings into mid-November can still work but produce a shorter, less productive harvest.
Most snap and snow peas climb 4–6 feet tall. Install your trellis before planting so you don't disturb roots later. A simple option: pound in two stakes and run horizontal strings of twine every 6 inches, or hang pea trellis netting between the stakes. Peas grab the trellis with thin tendrils — they're self-climbing once they find something to grab.
Direct sow seeds 1 inch deep, 2–3 inches apart, along the base of your trellis. Peas don't like to be transplanted — always sow directly into the garden. They germinate in 7–14 days. Thin to 4–6 inches apart once established.
Soaking seeds overnight before planting speeds germination slightly.
Like beans, peas fix their own nitrogen, so don't over-fertilize. A compost amendment before planting is sufficient. Water consistently but don't overwater — peas are susceptible to root rot in waterlogged soil. In Phoenix's cool winter weather, watering every 3–4 days is usually adequate.
Harvest snap peas when pods are plump, bright green, and the peas inside are visible but before the pod gets tough or stringy. Taste test frequently — the best time to harvest is when they're sweetest. Cold nights actually increase sugar content, so January peas are at their peak.
Pick every 2–3 days during peak production to keep plants producing. Leaving overmature pods signals the plant to stop flowering.
Want every planting date in one place? My Phoenix Planting Calendar lays out what to plant, start indoors, or direct sow every month for Phoenix and the East Valley, including when to sow snap and snow peas. It's $7, instant PDF download.