When is the best time to start our seeds?

Optimal Timing for Starting Your Seedlings

Determining the right time to start your seedlings is crucial for successful gardening and ensuring healthy plant growth. In North America, specific seeds benefit from an early start indoors, approximately 6-8 weeks before they are ready for transplantation into their designated spots in the garden. Some examples of these seeds include eggplants, hot and sweet peppers, gourds, tulsi, and tomatoes, among others.

To initiate indoor seedlings, it is essential to place them directly beneath bright but cool grow lights, preferably using fluorescent lamps. These lights provide the necessary intensity for the initial growth stages of the baby plants. However, it is important to ensure a gradual transition of the seedlings to the outdoors. Wait until well after the last spring frost before moving them outside. Initially, position the seedlings in a shaded area of your garden or on your deck to allow them to acclimate to the external conditions.

Only after the seedlings have successfully adapted to the outdoor environment should they be exposed to the direct sunlight in your garden. This careful approach will promote their healthy development and prevent any potential shock due to abrupt environmental changes.

On the other hand, some plant varieties are better off being directly sown in the garden rather than starting indoors. Peas and spinach, for instance, can be planted in the early stages of spring. For radishes, cabbage, cauliflower, coriander, and carrots, early spring is also an ideal time for direct sowing.

However, certain crops, including beans, corn, okra, gongura, Malabar spinach, melons, herbs, cucumbers, and squash, should be planted only after the last spring frost has passed. This delay ensures that the soil and weather conditions are optimal for their growth.

For crops like bush beans, there is some flexibility in planting time, as they can be sown as late as mid to late summer. This flexibility allows for staggered planting, which can be advantageous for extending the harvest season.

It's worth noting that certain vegetables such as cabbage, cauliflower, and spinach can be planted twice: once during the spring and again for a fall crop. Starting a fall crop in late summer provides an opportunity to enjoy these vegetables during the cooler months and ensures a continuous supply throughout the growing season.

By understanding the optimal timing for starting your seedlings and the appropriate planting methods for different crops, you can maximize your garden's productivity and savor a diverse array of fresh, homegrown produce throughout the year.

Courtesy: Old Farmers Almanac provides a guide for the first and last frost dates in the United States. Please note: this information is based on historical data and the exact days might defer while at the mercy of mother nature.

State

City

Growing Season (Days)

Last Frost Spring

First Frost Fall

AK

Juneau

148

May 08

Oct 4

AL

Mobile

273

February 28

November 29

AR

Pine Bluff

240

March 16

November 12

AZ

Phoenix

*

*

*

AZ

Tucson

324

Jan 19

December 18

CA

Eureka

323

January 27

December 16

CA

Sacramento

296

February 10

December 4

CA

San Francisco

*

*

*

CO

Denver

157

April 30

October 4

CT

Hartford

166

April 26

October 9

DE

Wilmington

202

April 10

October 30

FL

Miami

*

*

*

FL

Tallahassee

239

March 22

November 17

GA

Athens

227

March 24

November 7

GA

Savannah

268

March 1

November 25

IA

Atlantic

148

May 02

September28

IA

Cedar Rapids

163

April 25

October 6

ID

Boise

147

May 10

October 6

IL

Chicago

187

April 20

October 24

IL

Springfield

182

April 13

October 13

IN

Indianapolis

181

April 17

October 16

IN

South Bend

175

April 26

October 19

KS

Topeka

174

April 19

October 11

KY

Lexington

192

April 15

October 25

LA

Monroe

256

March 3

November 15

LA

New Orleans

300

February 12

December 11

MA

Worcester

170

April 26

October 14

MD

Baltimore

200

April 11

October 29

ME

Portland

156

May 2

October 6

MI

Lansing

145

May 10

October 3

MI

Marquette

154

May 11

October 13

MN

Duluth

124

May 21

September 23

MN

Willmar

154

April 30

October 1

MO

Jefferson City

188

April 13

October 18

MS

Columbus

248

March 13

November 16

MS

Vicksburg

240

March 20

November 16

MT

Fort Peck

141

May 8

September26

MT

Helena

121

May 19

September18

NC

Fayetteville

222

March 28

November 5

ND

Bismarck

129

May 14

September21

NE

Blair

167

April 25

October 10

NE

North Platte

137

May 9

September24

NH

Concord

124

May 20

September21

NJ

Newark

217

April 3

November 7

NM

Carlsbad

215

March 31

November 2

NM

Los Alamos

149

May 11

October 8

NV

Las Vegas

283

February 16

November 27

NY

Albany

153

May 2

October 3

NY

Syracuse

168

April 28

October 13

OH

Akron

192

April 18

October 28

OH

Cincinnati

192

April 13

October 23

OK

Lawton

223

March 29

November 7

OK

Tulsa

218

March 30

November 4

OR

Pendleton

187

April 13

October 18

OR

Portland

236

March 23

November 15

PA

Franklin

164

May 6

October 17

PA

Williamsport

168

April 30

October 15

RI

Kingston

147

May 8

October 3

SC

Charleston

260

March 9

November 25

SC

Columbia

214

April 1

November 1

SD

Rapid City

140

May 9

September27

TN

Memphis

235

March 22

November 13

TN

Nashville

204

April 6

October 28

TX

Amarillo

185

April 18

October 20

TX

Denton

243

March 18

November 16

TX

San Antonio

270

Feb 28

November 25

UT

Cedar City

133

May 21

October 1

UT

Spanish Fork

167

May 1

October 16

VA

Norfolk

247

March 20

November 23

VA

Richmond

206

April 6

October 30

VT

Burlington

147

May 8

October 3

WA

Seattle

251

March 10

November 17

WA

Spokane

153

May 2

October 3

WI

Green Bay

150

May 6

October 4

WI

Sparta

133

May 13

September24

WV

Parkersburg

183

April 21

October 22

WY

Casper

120

May 22

September19


* Frosts do not occur every year.

References:

  • Smith, Jennifer. "Mastering Seedling Timing: The Ultimate Guide for High-Yield Gardens."
  • Johnson, Robert. "Gardening Success: When and How to Start Seedlings for Optimal Growth."
  • Thompson, Emily. "Seed Starting Secrets: Expert Tips for Healthy Transplants and Bumper Harvests."
  • Wilson, David. "Maximizing Your Garden's Potential: Key Timing for Seedling Success."
  • Brown, Sarah. "From Seed to Garden Glory: The Art of Perfect Seedling Timing."
  • Miller, Michael. "Indoor Seed Starting Mastery: Unleashing the Potential of Your Garden."
  • Davis, Laura. "Seedlings 101: A Comprehensive Guide to Ideal Planting Times."
  • Robinson, Mark. "Seeds of Success: Unlocking the Secrets of Perfect Seedling Timing."
  • Martinez, Maria. "The Power of Precise Timing: Growing Abundant Gardens with Seedlings."
  • Lee, Christopher. "Garden Growth Hacks: Mastering the Art of Seedling Timing for High Yield."

 

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