Starter Seed Tray with Self-Watering Base

This 3D printable Large Starter Seed Tray is a game-changer for gardeners seeking a low-maintenance, high-efficiency way to start their seedlings. Designed to hold 49 individual cells, each measuring 20mm x 20mm x 27mm, this tray offers plenty of space for growing a diverse array of plants think herbs, flowers, or hearty veggies all in one compact unit. The cell depth ensures robust root development, while the clever fold-open design allows each cell to split apart effortlessly for stress-free transplanting, keeping your seedlings’ roots intact.  

What makes this tray truly special is its integrated self-watering base. The lower tray catches excess water and wicks it back up to the cells, keeping soil consistently moist without the hassle of constant hand-watering. Tiny drainage holes in each cell prevent over-saturation, striking the perfect balance for healthy growth. This feature is a lifesaver for busy gardeners or anyone looking to streamline their seed-starting routine.

Assembly Notes

• Fold all four sides of each cell inward on itself before placing into the tray
• The cells will flex into shape don’t force them
• Warm plastic folds better
  • If the print is fresh off the bed, it’s ideal
  • If it’s been sitting in a cold shop, warm it slightly before folding
• Cold prints are more brittle and can snap during folding
• Take your time here once they’re in, they stay solid.

• The Large print profile is 49 individual cells. The bases overall dimension with the lid on 224x240x37mm.
• Newly Added: Small print profile is 25 individual cells. The bases overall dimension with the lid on 160x171x37mm.
• Newly Added to the print profile: Decorative caps for my seed tray and individual clear covers for each seed pod. The caps help prevent moisture loss and algae growth while adding a custom touch. The clear covers act as mini humidity domes, giving each seedling its own controlled environment. This setup improves humidity control, reduces mold risk, and enhances the overall look—an easy yet effective upgrade!

• We also have a larger cell print for when your plants get larger. 

  Medium Seed Tray with Self-Watering Base https://makerworld.com/en/models/1179673-medium-seed-tray-with-self-watering-base#profileId-1189607

  Large Seed Tray with Self-Watering Base https://makerworld.com/en/models/1209315-large-seed-tray-with-self-watering-base#profileId-1223755

  (New Larger Tray) Seed Tray Pro – H2 Series https://makerworld.com/en/models/2611661-seed-tray-pro-h2-series#profileId-2882151

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