FrostCal

When to Plant Dahlias in Texas

In a typical Texas location, plant outdoors Mar 14 – Mar 28. Across the state, the outdoor planting window starts as early as Jan 15 in Edinburg and as late as Apr 28 in Dumas.

Method Plant out (slips, crowns, or tubers)
Days to maturity 90–120 days

Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive.

Dahlias Planting Dates by City

CityPlant outdoors
HoustonFeb 9 – Feb 23
San AntonioMar 4 – Mar 18
DallasMar 9 – Mar 23
Fort WorthMar 12 – Mar 26
AustinMar 17 – Mar 31
El PasoMar 9 – Mar 23
ArlingtonMar 16 – Mar 30
Corpus ChristiFeb 7 – Feb 21
PlanoMar 14 – Mar 28
LaredoJan 27 – Feb 10
LubbockMar 31 – Apr 14
GarlandMar 14 – Mar 28
IrvingMar 9 – Mar 23
CypressFeb 26 – Mar 12
AmarilloApr 22 – May 6
Grand PrairieMar 16 – Mar 30
BrownsvilleJan 16 – Jan 30
McKinneyMar 24 – Apr 7
FriscoMar 14 – Mar 28
PasadenaFeb 9 – Feb 23
MesquiteMar 9 – Mar 23
KilleenMar 21 – Apr 4
McAllenJan 16 – Jan 30
CarrolltonMar 9 – Mar 23
MidlandApr 2 – Apr 16
WacoMar 16 – Mar 30
DentonMar 20 – Apr 3
AbileneMar 27 – Apr 10
Round RockMar 18 – Apr 1
BeaumontFeb 21 – Mar 7

Showing the 30 most populous of 258 Texas cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Texas cities.

Frequently Asked Questions

When should I plant dahlias in Texas?

In a typical Texas location, plant outdoors Mar 14 – Mar 28. Across the state, the outdoor planting window starts as early as Jan 15 in Edinburg and as late as Apr 28 in Dumas.

When is the last frost in Texas?

The average last spring frost in Texas ranges from January 8 in Edinburg to April 21 in Dumas, based on NOAA 1991–2020 climate normals.

How long do dahlias take to grow?

Dahlias typically take 90–120 days from planting to harvest. Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive.

Other Crops in Texas

When to plant dahlias in other states

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