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Lisa’s Spring Seed Starting Schedule For Summer Flowers

by | Feb 28, 2008

Here is my best case seed starting schedule this year with soil blocking. The last frost date for our area is April 15 and we do cover all of our new plantings with floating row cover for added protection so, late cool temperatures aren’t a facter for us. If your last frost date is later, just add the time difference. Also keep in mind that soil blocked plants grow much quicker which is why you start them later then you do with other methods.

Spring Seed Starting Schedule:

Basil: Start week of March 10, continue succession planting throughout season.

Sage: Start anytime- cold hardy.

Ageratum: Start week of March 10

Zinnias: week of March 24 absolute earliest, continue succession planting throughout season.

  • Benary Mix
  • Benary’s Carmine Rose
  • Benary Yellow
  • Benary Orange
  • Benary Lilac
  • Benary Purple
  • Benary Scarlet
  • Benary Salmon Rose
  • Benary Lime
  • Oklahoma Mix
  • Oklahoma Ivory

Rudbeckia: Start anytime- cold hardy.

  • Prairie Sun
  • Indian Summer
  • Goldilocks

Salvia : Start anytime- cold hardy.

  • Blue Bedder
  • Strara

Veronica Sightseeing: Start anytime- cold hardy.

Dianthus Neon: Start week of March 10

Marigold Gold Coins: Start week of March 31

Millet Purple Majesty: Start week of March 31

Gomphrena: Start week of March 31

Celosias: Start week of March 17, continue succession planting throughout season.

  • Sylphid
  • Pampas Plume
  • Hi Z
  • Amazon
  • Cockscomb Lime, Red, Yellow, Rose, Burgandy, Orange
  • Forest Fire
  • Fresh Look Yellow

Sunflowers: Start week March 24, continue succession planting throughout season.

  • Pro-Cut: Orange, Lemon Lite Lemon
  • Sunbright
  • Sunbeam

Tomatoes: Start week of March 17, continue succession planting throughout season.

Squash: Start Week of March April 8

Finally time to get started!

Lisa Mason Ziegler founder of The Gardener’s Workshop and Flower Farming School Online. Award-winning Author of Vegetables Love Flowers, and Cool Flowers. Watch Lisa’s Story and view her blog Field & Garden. Connect with Lisa on Facebook  and Instagram!

  • Blocker – Small

    $31.95
  • Seeding Pan

    $1.95
  • Blocker – Large

    $36.95
  • Blocker Inserts

    $9.95
  • Seed Starting Made Easy Online Workshop

    $24.95