🥬 Can I Plant Arugula in Aurora, CO?
Arugula thrives in cool weather and can be planted now for a fall harvest. Sow seeds soon — they'll be ready around Aug 19–Sep 8, well before the average first frost around Nov 2.
Growing Arugula in Aurora
Aurora sits at over 5,400 feet in Zone 5b, sharing Denver's challenging high-altitude gardening environment. The growing season is compact — around 150 days — with late spring frosts and early fall cold snaps. High-UV solar radiation speeds plant development but also increases water evaporation from soil. Raised beds, drip irrigation, and careful variety selection for short seasons are keys to success here.
In Aurora (last frost around May 7), arugula can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
Arugula thrives between 40°F and 65°F. It tolerates temperatures as low as 28°F, making it a candidate for early spring planting before the last frost date. Expect 20–40 days from transplant to first harvest. Fast-growing. Bolts quickly in heat — succession plant every 2 weeks.
Frequently Asked Questions
When can I plant arugula in Aurora, CO?
In Aurora (last frost around May 7), arugula can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
What is the USDA hardiness zone for Aurora?
Aurora, CO is in USDA Plant Hardiness Zone 5b. The last expected spring frost is around May 7, and the first fall frost arrives around October 4. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.
Is it safe to plant arugula outside in Aurora right now?
That depends on the current weather forecast. Arugula needs temperatures above 28°F (ideally 40–65°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.
Can I grow arugula in Aurora 2026?
Yes — Arugula grows well in Aurora, CO. With a Zone 5b climate and a growing season of ~150 days, Aurora is well-suited for cool-season crops like arugula. As a frost-tolerant crop, arugula can even go out a few weeks before the last frost date.
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