We can make custom gravity drop seeders for any type of tray or situation, including soil blocks: any number of holes in any pattern. Send us one of your trays and we will engineer a seeder to suit your needs. For soil block seeders, give us a call to discuss.

(Note: photo here is a paper chain pot gravity seeder)

Seed plates are available with different hole sizes depending on the size seed you are planting. If you plant many different kinds of seeds, you will need several different seed plates. We offer several standard sizes but can make seed plates with virtually any hole size (up to 8mm) based on your particular needs.

One insert comes with your seeder; additional plates are $75.

The following are the standard seeder insert hole sizes:

2.0mm: Recommended for small-seeded brassicas and other small seed (this is the smallest practical hole size)

2.5mm: Recommended for larger-seeded brassicas and other small seed

2.8mm: Recommended for alliums and other small seed.

4.0mm: Recommended for pelleted lettuce, small-seeded varieties of spinach and beets, cilantro, and other seed that is approximately 3.5to 3.9mm in size. Can be used to drop allium seed in small bunches.

4.5mm: Some growers of pelleted lettuce prefer a 4.5mm hole over the 4.0mm hole. Will also work for many varieties of spinach and beets.

5.0mm: Recommended for larger-seeder varieties of spinach and beets, seeding alliums in large bunches bunches (8-10 seeds per drop).

NOTE: the seeder does not handle tiny seed well. Tiny seed can get caught between the two layers of plastic.

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