FrostCal

When to Plant Arugula in Colorado

In a typical Colorado location, sow outdoors Apr 5 – Apr 19. Across the state, the outdoor planting window starts as early as Mar 17 in Grand Junction and as late as May 24 in Edwards. For a fall crop, plant around Aug 27 – Sep 3.

Method Direct sow
Days to maturity 30–40 days

Fast-growing, cold-tolerant green; direct sow 2-4 weeks before last frost, succession sow every 2-3 weeks.

Arugula Planting Dates by City

CityDirect sowFall planting
DenverApr 2 – Apr 16Aug 31 – Sep 7
Colorado SpringsApr 5 – Apr 19Aug 27 – Sep 3
AuroraApr 6 – Apr 20Aug 27 – Sep 3
Fort CollinsApr 4 – Apr 18Aug 26 – Sep 2
LakewoodApr 5 – Apr 19Aug 26 – Sep 2
ThorntonApr 4 – Apr 18Aug 30 – Sep 6
WestminsterApr 4 – Apr 18Aug 30 – Sep 6
ArvadaApr 7 – Apr 21Aug 24 – Aug 31
CentennialApr 7 – Apr 21Aug 27 – Sep 3
PuebloApr 2 – Apr 16Aug 28 – Sep 4
GreeleyApr 4 – Apr 18Aug 27 – Sep 3
BoulderApr 8 – Apr 22Aug 24 – Aug 31
Highlands RanchApr 7 – Apr 21Aug 27 – Sep 3
LongmontApr 9 – Apr 23Aug 24 – Aug 31
LovelandApr 12 – Apr 26Aug 20 – Aug 27
BroomfieldApr 4 – Apr 18Aug 30 – Sep 6
Grand JunctionMar 17 – Mar 31Sep 11 – Sep 18
Castle RockApr 11 – Apr 25Aug 21 – Aug 28
Commerce CityApr 6 – Apr 20Aug 27 – Sep 3
ParkerApr 11 – Apr 25Aug 22 – Aug 29
LittletonApr 4 – Apr 18Aug 30 – Sep 6
NorthglennApr 4 – Apr 18Aug 30 – Sep 6
BrightonApr 5 – Apr 19Aug 26 – Sep 2
Dakota RidgeApr 4 – Apr 18Aug 30 – Sep 6
EnglewoodApr 4 – Apr 18Aug 30 – Sep 6
Security-WidefieldApr 5 – Apr 19Aug 27 – Sep 3
WindsorApr 5 – Apr 19Aug 25 – Sep 1
Ken CarylApr 4 – Apr 18Aug 30 – Sep 6
Wheat RidgeApr 7 – Apr 21Aug 24 – Aug 31
Pueblo WestMar 29 – Apr 12Sep 1 – Sep 8

Showing the 30 most populous of 65 Colorado cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Colorado cities.

Frequently Asked Questions

When should I plant arugula in Colorado?

In a typical Colorado location, sow outdoors Apr 5 – Apr 19. Across the state, the outdoor planting window starts as early as Mar 17 in Grand Junction and as late as May 24 in Edwards. For a fall crop, plant around Aug 27 – Sep 3.

When is the last frost in Colorado?

The average last spring frost in Colorado ranges from April 14 in Grand Junction to June 21 in Edwards, based on NOAA 1991–2020 climate normals.

How long do arugula take to grow?

Arugula typically take 30–40 days from planting to harvest. Fast-growing, cold-tolerant green; direct sow 2-4 weeks before last frost, succession sow every 2-3 weeks.

Other Crops in Colorado

When to plant arugula in other states

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