Author: Phil Brooks
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2026 Seed Trays
Lessons Learned:
- Use 6 cell packs instead of 72 cell packs
- Allows for easier re-arranging later if plants need different requirements.
- Do a better job placing like items together. i.e. light required for germination, heat mat temperatures, etc…
- Place cell packs in a tray with holes so the entire tray can be soaked in a tray with no holes for watering.
Notes:
- Room temp was 50-60 for the first 2 days. Added room heater and kept at 60-75 for the remainder of grow out.
Potting Mix:
- 4 cups Black Kow
- 4 cups Seed Starter
- 1/2 cup Worm Castings
Tray 1
Cell Pack: 72
Heat Mat Temp: 77 (struggled to get that high, so remained closer to 70-72 for the first 2 days until I added the room heater)(Prefer 75-85)
Light Required: No
Light Duration: 9:05am – 1:05am (16 hrs)Row Type Variety Started
DateGermination
DateGermination
DaysGermination
%Transplant
Date1 Tomato Cherokee Purple 02/23/2026 02/28/2026 2 Tomato Black Krim 02/23/2026 02/28/2026 3 Tomato Mr. Stripey 02/23/2026 02/27/2026 4 Tomato (Cherry) Sweetie 02/23/2026 02/28/2026 5 Tomato (Cherry) Yellow Pear 02/23/2026 02/28/2026 6 Tomato (Cherry) Black Cherry 02/23/2026 02/27/2026 7 Pepper (Bell) Bull Nosed Large 02/23/2026 8 Pepper (Bell) California Wonder 02/23/2026 9 Chamomile German 02/23/2026 02/26/2026 3 10 Marjoram Sweet 02/23/2026 02/27/2026 11 Oregano Greek 02/23/2026 02/28/2026 12 Lemon Balm Lemon Balm 02/23/2026 02/28/2026
Tray 2
Cell Pack: 72
Heat Mat Temp: None (Prefer 60-70)
Light Required: Yes
Light Duration: 9:05am – 1:05am (16 hrs)Row Type Variety Started
DateGermination
DateGermination
DaysGermination
%Transplant
Date1 Lettuce Little Gem 02/23/2026 02/26/2026 3 2 Lettuce Little Gem 02/23/2026 02/26/2026 3 3 Lettuce Burpee Bibb 02/23/2026 02/28/2026 4 Lettuce Burpee Bibb 02/23/2026 02/26/2026 3 5 Lettuce Black Seeded Simpson 02/23/2026 02/26/2026 3 6 Lettuce Black Seeded Simpson 02/23/2026 02/26/2026 3 7 Lettuce Red Salad Bowl 02/23/2026 02/26/2026 3 8 Lettuce Red Salad Bowl 02/23/2026 02/26/2026 3 9 Lettuce Buttercrunch 02/23/2026 02/26/2026 3 10 Lettuce Buttercrunch 02/23/2026 02/26/2026 3 11 Cabbage Salad Delight 02/23/2026 12 Napa Cabbage Red Dragon Hybrid 02/23/2026 02/26/2026 3
Tray 3
Cell Pack: 72
Heat Mat Temp: None (Prefer 60-75)
Light Required: Yes
Light Duration: 9:05am – 1:05am (16 hrs)Row Type Variety Started
DateGermination
DateGermination
%Transplant
Date1 Marigold Happy Days 02/23/2026 02/27/2026 2 Marigold Happy Days 02/23/2026 02/27/2026 3 Marigold Happy Days 02/23/2026 02/27/2026 4 Marigold Mission Giant Yellow 02/23/2026 02/27/2026 5 Marigold Mission Giant Yellow 02/23/2026 02/28/2026 6 Marigold Mission Giant Yellow 02/23/2026 02/28/2026 7 Sweet Marigold Licorice 02/23/2026 02/28/2026 8 Sweet Marigold Licorice 02/23/2026 02/27/2026 9 Sweet Marigold Licorice 02/23/2026 02/28/2026 10 Marigold Sunset Giants 02/23/2026 02/27/2026 11 Marigold Sunset Giants 02/23/2026 02/27/2026 12 Marigold Sunset Giants 02/23/2026 02/27/2026 Notes:
- Sweet Marigold should be treated like an herb and planted with them next year. They are more for eating and don’t provide the same companion planting benefits as the regular marigolds do.
- The giant marigolds are showy for the flower bed, but probably too large for companion planting purposes. Plant more of the shorter varieties like Happy Days for companion planting.
Tray 4
Cell Pack: 72
Heat Mat Temp: None for 3 days, then 75 (Prefer 72-76)
Light Required: Yes
Light Duration: 9:05am – 1:05am (16 hrs)Row Type Variety Started
DateGermination
DateGermination
%Transplant
Date1 Petunia Supercascade White Hybrid 02/23/2026 2 Petunia Supercascade White Hybrid 02/23/2026 3 Petunia Supercascade White Hybrid 02/23/2026 4 Petunia Supercascade White Hybrid 02/23/2026 5 Petunia Supercascade Blue Hybrid 02/23/2026 6 Petunia Supercascade Blue Hybrid 02/23/2026 7 Petunia Supercascade Blue Hybrid 02/23/2026 8 Petunia Supercascade Blue Hybrid 02/23/2026 9 Petunia Supercascade Red Hybrid 02/23/2026 10 Petunia Supercascade Red Hybrid 02/23/2026 11 Petunia Supercascade Red Hybrid 02/23/2026 12 Petunia Supercascade Red Hybrid 02/23/2026
Tray 5
Cell Pack: 72
Heat Mat Temp: None (Prefer 60-70)
Light Required: Yes
Light Duration: 9:05am – 1:05am (16 hrs)Row Type Variety Started
DateGermination
DateGermination
%Transplant
Date1 Snapdragon Topper Hybrid 02/24/2026 2 Snapdragon Topper Hybrid 02/24/2026 3 Snapdragon Topper Hybrid 02/24/2026 4 Snapdragon Topper Hybrid 02/24/2026 5 Snapdragon Topper Hybrid 02/24/2026 6 Snapdragon Topper Hybrid 02/24/2026 7 Snapdragon Topper Hybrid 02/24/2026 8 Snapdragon Topper Hybrid 02/24/2026 9 Snapdragon Topper Hybrid 02/24/2026 10 Snapdragon Topper Hybrid 02/24/2026 11 Snapdragon Topper Hybrid 02/24/2026 12 Snapdragon Topper Hybrid 02/24/2026 - Use 6 cell packs instead of 72 cell packs