Soil & Trays

Greenhouse trays and soil

greenhouse soil and trays

Custom-blended soil mixes are a vital ingredient for anyone who operates a greenhouse.

For our part, Williamson Greenhouses sells our own special blend of germination mix with a starter injection of fertilizer that will be released on your first water cycle. Our offerings include specialized tobacco and vegetable soil mixes as well.

As far as containers, we have a wide range of foam trays with various counts: 72, 128, 162, 200, 288 and 338.

We also offer inserts for our 128- and 200-cell foam trays. We can supply you with hard-molded plastic or hemp trays.

Seeding tips

Please review a few of our seeding tips:

  • Proper seeding is the first step toward obtaining maximum seedling usability. Either tube or vacuum seeders can be used and both types need frequent checking to be sure they are delivering one seed per cell.
  • For proper germination, the greenhouse floor temperature should be held at 68–70º F until germination is complete.
  • Locate thermometers on the floor, not at eye level. There can be a great difference between the floor temperature and the temperature several feet above it.


Grow together with us

With Williamson Greenhouses, you can count on a convenient one-stop shopping experience when working with us as your business partner. Our greenhouse experts will be glad to give you advice about products and techniques that will give your agricultural business a boost.


Please contact us at any time if you’re interested in seeders, plastics and sheet cloths, transplanter equipment, heaters and ventilation and anything else that you think will make your business more profitable.

Give us a call and we will help you find products, resolve problems and help you with whatever else you need. You can depend on us to grow together!