When to plant sweet potatoes in Colorado

Sweet potatoes
Plant out in Denver
May 25–Jun 8

Across Colorado the window opens between May 5 and May 31. Find your city below; the dates follow each town's own average last frost.

Plant out, Denver
May 25–Jun 8
Last sowing for a harvest
May 27
Last frost, Denver
May 4

Plant out 3–5 weeks after the last frost. Set out slips when the soil is warm, around 65°F. They need a long, hot season.

Sweet potatoes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
DenverMay 25–Jun 8
Colorado SpringsMay 24–Jun 7
AuroraMay 28–Jun 11
Fort CollinsMay 23–Jun 6
LakewoodMay 24–Jun 7
ThorntonMay 23–Jun 6
ArvadaMay 26–Jun 9
WestminsterMay 23–Jun 6
GreeleyMay 23–Jun 6
PuebloMay 21–Jun 4
CentennialMay 26–Jun 9
BoulderMay 27–Jun 10
LongmontMay 28–Jun 11
LovelandMay 31–Jun 14
BroomfieldMay 23–Jun 6
Commerce CityMay 24–Jun 7
Grand JunctionMay 5–May 19
LittletonMay 23–Jun 6
BrightonMay 24–Jun 7
WindsorMay 24–Jun 7
ErieMay 28–Jun 11
NorthglennMay 23–Jun 6
Security-WidefieldMay 24–Jun 7
EnglewoodMay 23–Jun 6
Pueblo WestMay 17–May 31
Wheat RidgeMay 26–Jun 9
LafayetteMay 23–Jun 6
FountainMay 24–Jun 7
EvansMay 23–Jun 6
JohnstownMay 31–Jun 14
All 34 cities
CityPlant outLast frost
DenverMay 25 to Jun 8May 4
Colorado SpringsMay 24 to Jun 7May 3
AuroraMay 28 to Jun 11May 7
Fort CollinsMay 23 to Jun 6May 2
LakewoodMay 24 to Jun 7May 3
ThorntonMay 23 to Jun 6May 2
ArvadaMay 26 to Jun 9May 5
WestminsterMay 23 to Jun 6May 2
GreeleyMay 23 to Jun 6May 2
PuebloMay 21 to Jun 4Apr 30
CentennialMay 26 to Jun 9May 5
BoulderMay 27 to Jun 10May 6
LongmontMay 28 to Jun 11May 7
LovelandMay 31 to Jun 14May 10
BroomfieldMay 23 to Jun 6May 2
Commerce CityMay 24 to Jun 7May 3
Grand JunctionMay 5 to May 19Apr 14
LittletonMay 23 to Jun 6May 2
BrightonMay 24 to Jun 7May 3
WindsorMay 24 to Jun 7May 3
ErieMay 28 to Jun 11May 7
NorthglennMay 23 to Jun 6May 2
Security-WidefieldMay 24 to Jun 7May 3
EnglewoodMay 23 to Jun 6May 2
Pueblo WestMay 17 to May 31Apr 26
Wheat RidgeMay 26 to Jun 9May 5
LafayetteMay 23 to Jun 6May 2
FountainMay 24 to Jun 7May 3
EvansMay 23 to Jun 6May 2
JohnstownMay 31 to Jun 14May 10
Four Square MileMay 28 to Jun 11May 7
MontroseMay 19 to Jun 2Apr 28
LouisvilleMay 27 to Jun 10May 6
FirestoneMay 28 to Jun 11May 7

Questions

When should I plant sweet potatoes in Colorado?

In Denver, plant out from May 25 to June 8. Across Colorado the window opens between May 5 and May 31, depending on the local last frost.

How is this date worked out?

Plant out 3–5 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Colorado

Sweet potatoes in other states

Frost dates for every city in Colorado