Quick Answer
Seed starting trays are the better choice for most home gardeners because they are easier to manage, reusable, and work with standard accessories like humidity domes and heat mats. Soil blocking is worth trying if you want to avoid plastic and have the time to master the technique.
Why Seed Starting Trays Win on Convenience
Seed starting trays are designed to fit standard 1020 trays, making them compatible with humidity domes, heat mats, and watering systems. This means less fiddling and more consistent germination.
Trays are also reusable. A quality tray can last for many seasons, which lowers the long-term cost compared to soil blocks that need a special blocker and consistent practice to form correctly.
The Case for Soil Blocking
Soil blocking eliminates plastic pots and trays, which appeals to gardeners aiming to reduce waste. The air-pruning effect of soil blocks encourages healthier root development and prevents root circling.
However, soil blocking requires a learning curve. Blocks can crumble if the soil mix is too dry or too wet, and they need careful watering because they dry out faster than cells.
Trade-Offs at a Glance
- Cost: Seed starting trays are a one-time purchase that can be reused for years. Soil blocking requires buying a blocker and perfecting your soil mix, which can be trial-and-error. If budget is your main concern, trays are the more predictable investment.
- Space: Trays stack neatly and fit standard shelves. Soil blocks need open flats and more vertical space to avoid crowding. Measure your growing area before choosing.
- Root Health: Soil blocks air-prune roots, preventing circling. Trays can cause root circling if seedlings are left too long, but up-potting solves this. If you tend to delay transplanting, choose trays with larger cells or plan to up-pot.
- Ease of Use: Trays are straightforward: fill, sow, water. Soil blocks require consistent moisture and gentle handling. Beginners will likely have more success with trays.
Seed Starting Products to Consider
-
Seed Starting Bundle with Lid - 10 in. x 10 in.: This bundle includes a 10 x 10 in bottom tray and your choice of Standard or Jumbo Seedling Trays. It gives you a complete, customizable setup to start seeds indoors without buying pieces separately.
Seed Starting Bundle with Lid - 10 in. x 10 in.
-
76 Cell 1020 Germination Cell Bundle: A 76-cell germination bundle in the standard 1020 tray format for starting seeds indoors before transplanting. The 1020 format fits standard accessories and makes it easy to move many seedlings at once.
76 Cell 1020 Germination Cell Bundle
Which Method Fits You?
Best for
- Gardeners who want a simple, reliable seed-starting setup with standard accessories
- Those who plan to reuse their equipment for many seasons
Not for
- Gardeners who want to avoid plastic entirely and are willing to learn soil blocking
- Those who need to start a very large number of seeds and have time to master the technique