When to plant collard greens in Maryland

Plant out in Baltimore

Feb 24–Mar 10

Across Maryland the window opens between February 24 and March 27. Find your city below; the dates follow each town's own average last frost.

Plant out, Baltimore: Feb 24–Mar 10
Fall planting, Baltimore: Aug 29–Sep 12
Last frost, Baltimore: Mar 24

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Collards handle both heat and frost better than most greens.

Collard greens planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

BaltimoreFeb 24–Mar 10

ColumbiaMar 8–Mar 22

FrederickMar 5–Mar 19

GermantownMar 17–Mar 31

WaldorfMar 20–Apr 3

Silver SpringMar 13–Mar 27

Ellicott CityMar 5–Mar 19

Glen BurnieMar 13–Mar 27

GaithersburgMar 4–Mar 18

RockvilleMar 4–Mar 18

BethesdaMar 12–Mar 26

DundalkFeb 24–Mar 10

BowieMar 25–Apr 8

SevernMar 13–Mar 27

Bel Air SouthMar 13–Mar 27

TowsonMar 5–Mar 19

Aspen HillMar 4–Mar 18

WheatonMar 4–Mar 18

North BethesdaMar 4–Mar 18

PotomacMar 4–Mar 18

OdentonMar 13–Mar 27

HagerstownMar 14–Mar 28

CatonsvilleFeb 24–Mar 10

EssexFeb 24–Mar 10

AnnapolisFeb 27–Mar 13

Severna ParkFeb 27–Mar 13

ClintonMar 6–Mar 20

OlneyMar 4–Mar 18

RandallstownMar 5–Mar 19

Owings MillsMar 5–Mar 19

All 68 cities

City	Plant out	Fall planting	Last frost
Baltimore	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Columbia	Mar 8 to Mar 22	Aug 17 to Aug 31	Apr 5
Frederick	Mar 5 to Mar 19	Aug 14 to Aug 28	Apr 2
Germantown	Mar 17 to Mar 31	Aug 6 to Aug 20	Apr 14
Waldorf	Mar 20 to Apr 3	Aug 4 to Aug 18	Apr 17
Silver Spring	Mar 13 to Mar 27	Aug 9 to Aug 23	Apr 10
Ellicott City	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Glen Burnie	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Gaithersburg	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Rockville	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Bethesda	Mar 12 to Mar 26	Aug 8 to Aug 22	Apr 9
Dundalk	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Bowie	Mar 25 to Apr 8	Jul 30 to Aug 13	Apr 22
Severn	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Bel Air South	Mar 13 to Mar 27	Aug 7 to Aug 21	Apr 10
Towson	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Aspen Hill	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Wheaton	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
North Bethesda	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Potomac	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Odenton	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Hagerstown	Mar 14 to Mar 28	Aug 5 to Aug 19	Apr 11
Catonsville	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Essex	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Annapolis	Feb 27 to Mar 13	Aug 21 to Sep 4	Mar 27
Severna Park	Feb 27 to Mar 13	Aug 21 to Sep 4	Mar 27
Clinton	Mar 6 to Mar 20	Aug 16 to Aug 30	Apr 3
Olney	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Randallstown	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Owings Mills	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
College Park	Mar 13 to Mar 27	Aug 9 to Aug 23	Apr 10
Chillum	Mar 1 to Mar 15	Aug 16 to Aug 30	Mar 29
Pikesville	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Montgomery Village	Mar 17 to Mar 31	Aug 6 to Aug 20	Apr 14
Salisbury	Mar 6 to Mar 20	Aug 15 to Aug 29	Apr 3
Pasadena	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Milford Mill	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Middle River	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Bel Air North	Mar 13 to Mar 27	Aug 7 to Aug 21	Apr 10
Eldersburg	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Parkville	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Laurel	Mar 8 to Mar 22	Aug 17 to Aug 31	Apr 5
Crofton	Mar 25 to Apr 8	Jul 30 to Aug 13	Apr 22
Clarksburg	Mar 17 to Mar 31	Aug 6 to Aug 20	Apr 14
Perry Hall	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Carney	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Reisterstown	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
South Laurel	Mar 8 to Mar 22	Aug 17 to Aug 31	Apr 5
Lochearn	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Ilchester	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Fairland	Mar 8 to Mar 22	Aug 17 to Aug 31	Apr 5
Elkridge	Mar 13 to Mar 27	Aug 8 to Aug 22	Apr 10
Ballenger Creek	Mar 5 to Mar 19	Aug 14 to Aug 28	Apr 2
Fort Washington	Mar 6 to Mar 20	Aug 16 to Aug 30	Apr 3
North Laurel	Mar 8 to Mar 22	Aug 17 to Aug 31	Apr 5
Edgewood	Mar 13 to Mar 27	Aug 7 to Aug 21	Apr 10
Greenbelt	Mar 13 to Mar 27	Aug 9 to Aug 23	Apr 10
Suitland	Mar 1 to Mar 15	Aug 16 to Aug 30	Mar 29
Landover	Mar 1 to Mar 15	Aug 16 to Aug 30	Mar 29
North Potomac	Mar 4 to Mar 18	Aug 14 to Aug 28	Apr 1
Arnold	Feb 27 to Mar 13	Aug 21 to Sep 4	Mar 27
Cockeysville	Mar 5 to Mar 19	Aug 15 to Aug 29	Apr 2
Camp Springs	Mar 6 to Mar 20	Aug 16 to Aug 30	Apr 3
Langley Park	Mar 13 to Mar 27	Aug 9 to Aug 23	Apr 10
Hyattsville	Mar 1 to Mar 15	Aug 16 to Aug 30	Mar 29
Arbutus	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Rosedale	Feb 24 to Mar 10	Aug 29 to Sep 12	Mar 24
Westminster	Mar 27 to Apr 10	Jul 28 to Aug 11	Apr 24

Questions

When should I plant collard greens in Maryland?

In Baltimore, plant out from February 24 to March 10. Across Maryland the window opens between February 24 and March 27, depending on the local last frost.

How is this date worked out?

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Maryland

Collard greens in other states

Frost dates for every city in Maryland