How to choose the right seedling starter kit. 40 cells seed trays are suitable for small seeds, such as flowers, vegetables, fruits, tobacco and other plants. 15 cells seed trays are suitable for large seeds, such as potatoes, tomatoes, peppers, eggplants and so on. Each cell has quite a bit of room for the seedlings for good root development before transplanting to garden or bigger pots. Excellent performance (new version seed trays from MIXC brand) Transparent cell tray to see plants' root system The most suitable size for growing seeds Improve germination and survival rate to save time and cost Humidity control and drainage Great value package MIXC seed starting kits Seedlings are weak, they need a suitable space to improve their absorption of water and nutrients. MIXC seed starter kits can help to improve seed germination rate and survival rate, so it is a must have for everyone who likes gardening. We can help you save daily frustration and money.