When to plant Swiss chard in Missouri

In spring, from Mar 1 – May 25 in Ballwin to Apr 1 – June 15 in West Plains.

In fall, June 1 – Sept 10.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Swiss chard planting dates by place in Missouri
PlaceSpringFall
ArnoldMar 15 – June 15June 1 – Sept 10
BallwinMar 1 – May 25June 1 – Sept 10
Bellefontaine NeighborsMar 1 – May 25June 1 – Sept 10
BeltonMar 15 – June 15June 1 – Sept 10
Blue SpringsMar 15 – June 15June 1 – Sept 10
BolivarMar 15 – June 15June 1 – Aug 1
BransonMar 15 – June 15June 1 – Sept 10
BridgetonMar 1 – May 25June 1 – Sept 10
Cape GirardeauMar 15 – June 15June 1 – Aug 1
CarthageMar 1 – May 25June 1 – Sept 10
ChesterfieldMar 1 – May 25June 1 – Sept 10
ClaytonMar 1 – May 25June 1 – Sept 10
ColumbiaMar 15 – June 15June 1 – Sept 10
CrestwoodMar 1 – May 25June 1 – Sept 10
Creve CoeurMar 1 – May 25June 1 – Sept 10
Dardenne PrairieMar 15 – June 15June 1 – Sept 10
EllisvilleMar 15 – June 15June 1 – Aug 1
EurekaMar 15 – June 15June 1 – Aug 1
Excelsior SpringsApr 1 – June 15June 1 – Aug 1
FarmingtonMar 15 – June 15June 1 – Aug 1
FergusonMar 1 – May 25June 1 – Sept 10
FestusMar 15 – June 15June 1 – Sept 10
FlorissantMar 1 – May 25June 1 – Sept 10
FultonMar 15 – June 15June 1 – Aug 1
GladstoneMar 1 – May 25June 1 – Sept 10
Grain ValleyMar 15 – June 15June 1 – Sept 10
GrandviewMar 15 – June 15June 1 – Sept 10
HannibalMar 15 – June 15June 1 – Sept 10
HazelwoodMar 1 – May 25June 1 – Sept 10
IndependenceMar 15 – June 15June 1 – Sept 10
JacksonMar 15 – June 15June 1 – Sept 10
Jefferson CityMar 15 – June 15June 1 – Sept 10
JenningsMar 1 – May 25June 1 – Sept 10
JoplinMar 15 – June 15June 1 – Sept 10
Kansas CityMar 1 – May 25June 1 – Sept 10
KearneyApr 1 – June 15June 1 – Aug 1
KennettMar 1 – May 25June 1 – Sept 10
KirksvilleApr 1 – June 15June 1 – Aug 1
KirkwoodMar 1 – May 25June 1 – Sept 10
Lake St. LouisMar 15 – June 15June 1 – Sept 10
LebanonApr 1 – June 15June 1 – Aug 1
Lee's SummitMar 15 – June 15June 1 – Sept 10
LibertyApr 1 – June 15June 1 – Aug 1
ManchesterMar 1 – May 25June 1 – Sept 10
MarshallMar 15 – June 15June 1 – Aug 1
Maryland HeightsMar 1 – May 25June 1 – Sept 10
MaryvilleApr 1 – June 15June 1 – Aug 1
MexicoMar 15 – June 15June 1 – Aug 1
MoberlyMar 15 – June 15June 1 – Aug 1
MonettMar 15 – June 15June 1 – Sept 10
NeoshoMar 15 – June 15June 1 – Sept 10
NixaMar 15 – June 15June 1 – Aug 1
O'FallonMar 15 – June 15June 1 – Sept 10
OverlandMar 1 – May 25June 1 – Sept 10
OzarkMar 15 – June 15June 1 – Aug 1
Poplar BluffMar 1 – May 25June 1 – Sept 15
RaymoreMar 15 – June 15June 1 – Sept 10
RaytownMar 15 – June 15June 1 – Sept 10
RepublicMar 15 – June 15June 1 – Sept 10
RollaMar 15 – June 15June 1 – Sept 10
SedaliaApr 1 – June 15June 1 – Aug 1
SikestonMar 1 – May 25June 1 – Sept 15
SmithvilleApr 1 – June 15June 1 – Aug 1
SpringfieldMar 1 – May 25June 1 – Sept 10
St. AnnMar 1 – May 25June 1 – Sept 10
St. CharlesMar 15 – June 15June 1 – Sept 10
St. JosephApr 1 – June 15June 1 – Aug 1
St. LouisMar 1 – May 25June 1 – Sept 10
St. PetersMar 15 – June 15June 1 – Sept 10
Town and CountryMar 1 – May 25June 1 – Sept 10
TroyMar 15 – June 15June 1 – Aug 1
UnionMar 15 – June 15June 1 – Aug 1
University CityMar 1 – May 25June 1 – Sept 10
WarrensburgMar 15 – June 15June 1 – Aug 1
WashingtonMar 15 – June 15June 1 – Aug 1
Webb CityMar 15 – June 15June 1 – Sept 10
Webster GrovesMar 1 – May 25June 1 – Sept 10
WentzvilleMar 15 – June 15June 1 – Sept 10
West PlainsApr 1 – June 15June 1 – Aug 1
WildwoodMar 15 – June 15June 1 – Aug 1

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for swiss chard.