When to plant swiss chard in Maryland

Swiss chard
Sow outdoors in Baltimore
Mar 10–Apr 7

Across Maryland the window opens between March 10 and April 10. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Baltimore
Mar 10–Apr 7
Last frost, Baltimore
Mar 24

Sow outdoors from 2 weeks before to 2 weeks after the last frost. Cut outer leaves and the plant keeps going until hard frost.

Swiss chard planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
BaltimoreMar 10–Apr 7
ColumbiaMar 22–Apr 19
FrederickMar 19–Apr 16
GermantownMar 31–Apr 28
WaldorfApr 3–May 1
Silver SpringMar 27–Apr 24
Ellicott CityMar 19–Apr 16
Glen BurnieMar 27–Apr 24
GaithersburgMar 18–Apr 15
RockvilleMar 18–Apr 15
BethesdaMar 26–Apr 23
DundalkMar 10–Apr 7
BowieApr 8–May 6
SevernMar 27–Apr 24
Bel Air SouthMar 27–Apr 24
TowsonMar 19–Apr 16
Aspen HillMar 18–Apr 15
WheatonMar 18–Apr 15
North BethesdaMar 18–Apr 15
PotomacMar 18–Apr 15
OdentonMar 27–Apr 24
HagerstownMar 28–Apr 25
CatonsvilleMar 10–Apr 7
EssexMar 10–Apr 7
AnnapolisMar 13–Apr 10
Severna ParkMar 13–Apr 10
ClintonMar 20–Apr 17
OlneyMar 18–Apr 15
RandallstownMar 19–Apr 16
Owings MillsMar 19–Apr 16
All 68 cities
CitySow outdoorsLast frost
BaltimoreMar 10 to Apr 7Mar 24
ColumbiaMar 22 to Apr 19Apr 5
FrederickMar 19 to Apr 16Apr 2
GermantownMar 31 to Apr 28Apr 14
WaldorfApr 3 to May 1Apr 17
Silver SpringMar 27 to Apr 24Apr 10
Ellicott CityMar 19 to Apr 16Apr 2
Glen BurnieMar 27 to Apr 24Apr 10
GaithersburgMar 18 to Apr 15Apr 1
RockvilleMar 18 to Apr 15Apr 1
BethesdaMar 26 to Apr 23Apr 9
DundalkMar 10 to Apr 7Mar 24
BowieApr 8 to May 6Apr 22
SevernMar 27 to Apr 24Apr 10
Bel Air SouthMar 27 to Apr 24Apr 10
TowsonMar 19 to Apr 16Apr 2
Aspen HillMar 18 to Apr 15Apr 1
WheatonMar 18 to Apr 15Apr 1
North BethesdaMar 18 to Apr 15Apr 1
PotomacMar 18 to Apr 15Apr 1
OdentonMar 27 to Apr 24Apr 10
HagerstownMar 28 to Apr 25Apr 11
CatonsvilleMar 10 to Apr 7Mar 24
EssexMar 10 to Apr 7Mar 24
AnnapolisMar 13 to Apr 10Mar 27
Severna ParkMar 13 to Apr 10Mar 27
ClintonMar 20 to Apr 17Apr 3
OlneyMar 18 to Apr 15Apr 1
RandallstownMar 19 to Apr 16Apr 2
Owings MillsMar 19 to Apr 16Apr 2
College ParkMar 27 to Apr 24Apr 10
ChillumMar 15 to Apr 12Mar 29
PikesvilleMar 19 to Apr 16Apr 2
Montgomery VillageMar 31 to Apr 28Apr 14
SalisburyMar 20 to Apr 17Apr 3
PasadenaMar 27 to Apr 24Apr 10
Milford MillMar 19 to Apr 16Apr 2
Middle RiverMar 10 to Apr 7Mar 24
Bel Air NorthMar 27 to Apr 24Apr 10
EldersburgMar 19 to Apr 16Apr 2
ParkvilleMar 19 to Apr 16Apr 2
LaurelMar 22 to Apr 19Apr 5
CroftonApr 8 to May 6Apr 22
ClarksburgMar 31 to Apr 28Apr 14
Perry HallMar 19 to Apr 16Apr 2
CarneyMar 19 to Apr 16Apr 2
ReisterstownMar 19 to Apr 16Apr 2
South LaurelMar 22 to Apr 19Apr 5
LochearnMar 19 to Apr 16Apr 2
IlchesterMar 27 to Apr 24Apr 10
FairlandMar 22 to Apr 19Apr 5
ElkridgeMar 27 to Apr 24Apr 10
Ballenger CreekMar 19 to Apr 16Apr 2
Fort WashingtonMar 20 to Apr 17Apr 3
North LaurelMar 22 to Apr 19Apr 5
EdgewoodMar 27 to Apr 24Apr 10
GreenbeltMar 27 to Apr 24Apr 10
SuitlandMar 15 to Apr 12Mar 29
LandoverMar 15 to Apr 12Mar 29
North PotomacMar 18 to Apr 15Apr 1
ArnoldMar 13 to Apr 10Mar 27
CockeysvilleMar 19 to Apr 16Apr 2
Camp SpringsMar 20 to Apr 17Apr 3
Langley ParkMar 27 to Apr 24Apr 10
HyattsvilleMar 15 to Apr 12Mar 29
ArbutusMar 10 to Apr 7Mar 24
RosedaleMar 10 to Apr 7Mar 24
WestminsterApr 10 to May 8Apr 24

Questions

When should I plant swiss chard in Maryland?

In Baltimore, sow outdoors from March 10 to April 7. Across Maryland the window opens between March 10 and April 10, depending on the local last frost.

How is this date worked out?

Sow outdoors from 2 weeks before to 2 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Maryland

Swiss chard in other states

Frost dates for every city in Maryland