The Rule of Thumb for Choosing Containers

trudi_dJanuary 1, 2013


See your thumb?

That is the dual answer to choosing containers to winter sow with.

Can I Winter Sow in containers that are not clear?

If you are using a container made with tinted plastic it is easy to tell if the plastic is too dark and will not let in sufficient light. Can you see your thumb through the plastic? If you can see your thumb then the plastic will let in enough light and won't shade seeds or seedlings.

How deep should the soil be in a container?

An adult thumb, from tip to palm, is over two inches long. You can check the soil depth by plunging your thumb straight down into the dampened soil. Pre-dampen the soil prior to sowing because the water helps settle the soil down by reducing air pockets, it is much less fluffy and you'll get a more realistic idea of how much soil is in the container.

If the soil completely covers your thumb it is sufficiently deep. The deeper the soil the more moisture it can retain. The same amount of soil in a shallow pan has a greater surface to depth ratio, meaning that more soil is exposed to sun and wind. Evaporation can occur much faster.

For more information about soil moisture please read the Winter Sowing Forum FAQ called "Determining Sufficient Moisture in a Flat and Watering Techniques."

Sign Up to comment
More Discussions
Winter Sowing Seed Exchange FAQs ~ Can I trade extra seeds from anoth
Sometimes traders are extremely generous. They send...
trudi_d
What does *stratification* mean?
The Merriam-Webster definition of the VERB "Stratify"...
trudi_d
Winter Sowing Seed Exchange FAQs ~ The PITFALL of over-trading.
It's late at night.....you're packing up the last of...
trudi_d
Can I Winter Sow Hosta Seeds?
Hostas can be sown either indoors or outdoors. If the...
trudi_d
I usually direct sow....why is Winter Sowing better?
When you direct sow in the ground the seeds are at...
trudi_d
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™