Multisowing modules to save time, compost and greenhouse space, by Charles Dowding

Jeremie LitzlerAbout 1 minGardeningCharles DowdingNo DigMultisowingCompost

Charles explains how to sow more seeds in a smaller area and which vegetables work best with multisowing.

A seedling tray with Charles ready to sow some seeds
Charles takes a few onion seeds to sow the module tray. Credits: image taken from Charles Dowding’s vlog

Thanks to Charles Dowding for sharing his wisdom and knowledge! I wrote the following notes watching the video published on Charles Dowding’s channel. You can watch it using this YouTube linkopen in new window.

Fill the tray with compost

Use a fine compost will make it easier to fit the compost in the small module cells.

Follow those steps:

  • pour the compost in the cells
  • push down with your fingers on the compost into the cells
    • it will hold more moisture
    • the compost will hold together better when you prick out the seedling
  • create little holes where you will drop the seeds

How deep should you sow

It’s best not to sow to deep (no more than 2 cm) so the seeds can come out.


Put 2 or 3 seeds per cell.

Push the peas a little bit deeper than the rest.


Put 4 or 5 seeds per cell.

The more you put in each cell, the smaller the radishes.


Put 4 or 5 seeds per cell.

It’s hard to sow beetroot direct because the seedlings are prone to pest attack.

When you have grown them in modules, they tend to resist better.


For onions, put about 6 seeds per cell. For spring onions, put 2 more per cell.

Wrapping up

Cover with compost the holes and firm it before watering well.

The compost needs to be fully moist.

Last update:
Contributors: Jeremie Litzler