When to plant parsley in Colorado

Parsley
Plant out in Denver
Apr 20–May 11

Across Colorado the window opens between March 31 and April 26. Find your city below; the dates follow each town's own average last frost.

Start indoors, Denver
Feb 23–Mar 9
Plant out, Denver
Apr 20–May 11
Sow outdoors, Denver
Apr 13–May 4
Last frost, Denver
May 4

Start seeds indoors 8–10 weeks before the last frost; plant out from 2 weeks before to 1 weeks after the last frost; sow outdoors up to 3 weeks before the last frost. Soaking seed overnight helps slow-sprouting parsley.

Parsley planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
DenverApr 20–May 11
Colorado SpringsApr 19–May 10
AuroraApr 23–May 14
Fort CollinsApr 18–May 9
LakewoodApr 19–May 10
ThorntonApr 18–May 9
ArvadaApr 21–May 12
WestminsterApr 18–May 9
GreeleyApr 18–May 9
PuebloApr 16–May 7
CentennialApr 21–May 12
BoulderApr 22–May 13
LongmontApr 23–May 14
LovelandApr 26–May 17
BroomfieldApr 18–May 9
Commerce CityApr 19–May 10
Grand JunctionMar 31–Apr 21
LittletonApr 18–May 9
BrightonApr 19–May 10
WindsorApr 19–May 10
ErieApr 23–May 14
NorthglennApr 18–May 9
Security-WidefieldApr 19–May 10
EnglewoodApr 18–May 9
Pueblo WestApr 12–May 3
Wheat RidgeApr 21–May 12
LafayetteApr 18–May 9
FountainApr 19–May 10
EvansApr 18–May 9
JohnstownApr 26–May 17
All 34 cities
CityStart indoorsPlant outSow outdoorsLast frost
DenverFeb 23 to Mar 9Apr 20 to May 11Apr 13 to May 4May 4
Colorado SpringsFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
AuroraFeb 26 to Mar 12Apr 23 to May 14Apr 16 to May 7May 7
Fort CollinsFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
LakewoodFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
ThorntonFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
ArvadaFeb 24 to Mar 10Apr 21 to May 12Apr 14 to May 5May 5
WestminsterFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
GreeleyFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
PuebloFeb 19 to Mar 5Apr 16 to May 7Apr 9 to Apr 30Apr 30
CentennialFeb 24 to Mar 10Apr 21 to May 12Apr 14 to May 5May 5
BoulderFeb 25 to Mar 11Apr 22 to May 13Apr 15 to May 6May 6
LongmontFeb 26 to Mar 12Apr 23 to May 14Apr 16 to May 7May 7
LovelandMar 1 to Mar 15Apr 26 to May 17Apr 19 to May 10May 10
BroomfieldFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
Commerce CityFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
Grand JunctionFeb 3 to Feb 17Mar 31 to Apr 21Mar 24 to Apr 14Apr 14
LittletonFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
BrightonFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
WindsorFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
ErieFeb 26 to Mar 12Apr 23 to May 14Apr 16 to May 7May 7
NorthglennFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
Security-WidefieldFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
EnglewoodFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
Pueblo WestFeb 15 to Mar 1Apr 12 to May 3Apr 5 to Apr 26Apr 26
Wheat RidgeFeb 24 to Mar 10Apr 21 to May 12Apr 14 to May 5May 5
LafayetteFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
FountainFeb 22 to Mar 8Apr 19 to May 10Apr 12 to May 3May 3
EvansFeb 21 to Mar 7Apr 18 to May 9Apr 11 to May 2May 2
JohnstownMar 1 to Mar 15Apr 26 to May 17Apr 19 to May 10May 10
Four Square MileFeb 26 to Mar 12Apr 23 to May 14Apr 16 to May 7May 7
MontroseFeb 17 to Mar 3Apr 14 to May 5Apr 7 to Apr 28Apr 28
LouisvilleFeb 25 to Mar 11Apr 22 to May 13Apr 15 to May 6May 6
FirestoneFeb 26 to Mar 12Apr 23 to May 14Apr 16 to May 7May 7

Questions

When should I plant parsley in Colorado?

In Denver, plant out from April 20 to May 11. Across Colorado the window opens between March 31 and April 26, depending on the local last frost.

How is this date worked out?

Start seeds indoors 8–10 weeks before the last frost; plant out from 2 weeks before to 1 weeks after the last frost; sow outdoors up to 3 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Colorado

Parsley in other states

Frost dates for every city in Colorado