When to plant daffodil bulbs in Colorado

Fall planting in Denver

Sep 10–Oct 22

Across Colorado the window opens between September 3 and September 25. Find your city below; the dates follow each town's own average first fall frost.

Fall planting, Denver: Sep 10–Oct 22
Last frost, Denver: May 4

Plant from 4 weeks before to 2 weeks after the first fall frost. Daffodils root best when they go in a few weeks before the ground freezes. Deer and rodents leave them alone.

Daffodil bulbs planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

DenverSep 10–Oct 22

Colorado SpringsSep 10–Oct 22

AuroraSep 10–Oct 22

Fort CollinsSep 9–Oct 21

LakewoodSep 9–Oct 21

ThorntonSep 13–Oct 25

ArvadaSep 7–Oct 19

WestminsterSep 13–Oct 25

GreeleySep 10–Oct 22

PuebloSep 11–Oct 23

CentennialSep 10–Oct 22

BoulderSep 7–Oct 19

LongmontSep 7–Oct 19

LovelandSep 3–Oct 15

BroomfieldSep 13–Oct 25

Commerce CitySep 9–Oct 21

Grand JunctionSep 25–Nov 6

LittletonSep 13–Oct 25

BrightonSep 9–Oct 21

WindsorSep 8–Oct 20

ErieSep 7–Oct 19

NorthglennSep 13–Oct 25

Security-WidefieldSep 10–Oct 22

EnglewoodSep 13–Oct 25

Pueblo WestSep 15–Oct 27

Wheat RidgeSep 7–Oct 19

LafayetteSep 13–Oct 25

FountainSep 10–Oct 22

EvansSep 10–Oct 22

JohnstownSep 3–Oct 15

All 34 cities

City	Fall planting	Last frost
Denver	Sep 10 to Oct 22	May 4
Colorado Springs	Sep 10 to Oct 22	May 3
Aurora	Sep 10 to Oct 22	May 7
Fort Collins	Sep 9 to Oct 21	May 2
Lakewood	Sep 9 to Oct 21	May 3
Thornton	Sep 13 to Oct 25	May 2
Arvada	Sep 7 to Oct 19	May 5
Westminster	Sep 13 to Oct 25	May 2
Greeley	Sep 10 to Oct 22	May 2
Pueblo	Sep 11 to Oct 23	Apr 30
Centennial	Sep 10 to Oct 22	May 5
Boulder	Sep 7 to Oct 19	May 6
Longmont	Sep 7 to Oct 19	May 7
Loveland	Sep 3 to Oct 15	May 10
Broomfield	Sep 13 to Oct 25	May 2
Commerce City	Sep 9 to Oct 21	May 3
Grand Junction	Sep 25 to Nov 6	Apr 14
Littleton	Sep 13 to Oct 25	May 2
Brighton	Sep 9 to Oct 21	May 3
Windsor	Sep 8 to Oct 20	May 3
Erie	Sep 7 to Oct 19	May 7
Northglenn	Sep 13 to Oct 25	May 2
Security-Widefield	Sep 10 to Oct 22	May 3
Englewood	Sep 13 to Oct 25	May 2
Pueblo West	Sep 15 to Oct 27	Apr 26
Wheat Ridge	Sep 7 to Oct 19	May 5
Lafayette	Sep 13 to Oct 25	May 2
Fountain	Sep 10 to Oct 22	May 3
Evans	Sep 10 to Oct 22	May 2
Johnstown	Sep 3 to Oct 15	May 10
Four Square Mile	Sep 10 to Oct 22	May 7
Montrose	Sep 16 to Oct 28	Apr 28
Louisville	Sep 7 to Oct 19	May 6
Firestone	Sep 7 to Oct 19	May 7

Questions

When should I plant daffodil bulbs in Colorado?

In Denver, fall planting from September 10 to October 22. Across Colorado the window opens between September 3 and September 25, depending on the local last frost.

How is this date worked out?

Plant from 4 weeks before to 2 weeks after the first fall frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.