Q: How often do I need to add water to the windowsill seed starter?
The reservoir holds enough water for about 3 to 5 days, depending on the type and age of your seedlings, and a built-in water-level indicator shows when it is time to top up.
AA715 - Windowsill Seed Starter

Anyone who starts plants from seed knows how critical regular watering is to the process. We developed this reusable seed starter to provide water on demand through a capillary mat, as well as to create a mini-environment for the seedlings. The clear dome minimizes evaporation and speeds germination, and a water-level indicator lets you know if any topping up is needed. The stand pegs are used to pop the transplants out of the tray, eliminating transplant shock.
Measuring 15" × 5 1/2" × 7" high, it is suited to growing transplants on a windowsill. Even when not used on a windowsill, it’s great for starting slow-growing plants such as lettuce or broccoli, or many perennials.
The seed tray has twenty-four 1 1/4" square cells. The stand, reservoir and tray are made from a high-density polystyrene, and the capillary mat is non-rotting.
Made in Canada.
The reservoir holds enough water for about 3 to 5 days, depending on the type and age of your seedlings, and a built-in water-level indicator shows when it is time to top up.
Yes, it works well anywhere you want consistent watering and humidity, and is wonderful for slow-growing plants such as lettuce, broccoli and many perennials.
Flip the growing stand so the ejector pegs point upward, align them with the holes under the seed tray and gently push the tray down. The plugs pop free with the root ball intact, avoiding transplant shock.
Rinse all parts under running water to remove potting mix and fertilizer residue, then soak them for 1 hour in a diluted solution of 1 tbsp. bleach per gallon of water. Rinse well and allow it to dry before storing.
| Materials | High-density polystyrene stand, reservoir and seed tray; non-rotting capillary mat |
| Dimensions | 15" × 5 1/2" × 7" high; 1 1/4" square cells |
| Capacity | 24 cells; 3- to 5-day water reservoir |
| Country of Origin | Canada |
| Includes | Windowsill seed starter; capillary mat; water reservoir; seed tray; clear dome cover; water-level indicator |
| Package Quantity | 1 kit |
| Warranty | Lee Valley Satisfaction Guarantee |

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Lee Valley Windowsill Seed Starter
Anyone who starts plants from seed knows how critical regular watering is to the process. We developed this reusable seed starter to provide water on demand through a capillary mat, as well as to create a mini-environment for the seedlings. The clear dome minimizes evaporation and speeds germination, and a water-level indicator lets you know if any topping up is needed. The stand pegs are used to pop the transplants out of the tray, eliminating transplant shock.
Measuring 15" × 5 1/2" × 7" high, it is suited to growing transplants on a windowsill. Even when not used on a windowsill, it’s great for starting slow-growing plants such as lettuce or broccoli, or many perennials.
The seed tray has twenty-four 1 1/4" square cells. The stand, reservoir and tray are made from a high-density polystyrene, and the capillary mat is non-rotting.
Made in Canada.