Teaching Organic Farming and Gardening

Propagation/Greenhouse Management

Unit 1.3 | 47

Appendix 7: Sample Soil Mix Recipes

Appendix 7

FLAT/SOWING MIX

3 parts compost (sifted .5 inch screen)

2 parts soil

1 part sand

2 parts coir fiber (premoistened) or 1 part coir fiber

• 1 part leaf mold (sifted .5 inch screen)

GARDEN SPEEDLING MIX

2-1/2 compost (sifted .5 inch screen)

1 soil

2 coir fiber (premoistened) or 1 coir fiber + 1 leaf
mold (sifted .5 inch screen)

1/4 gallon kelp meal (*1 tablespoon)

*Use 1/4 gallon when one part is equal to one
wheelbarrow. Use 1 tablespoon when the measure is
a shovelful.

POTTING MIX

1-1/2 compost

1-1/2 partially decomposed duff

1 used mix

1 sand

1 perlite (or used mistbox mix) or 1/2 perlite (or
used mistbox mix and 1/2 grape seed

1/2 soil

DRYLAND POTTING MIX

3 potting mix

1 sand

1 perlite (or used mistbox mix)

or

1 grape seed

UCSC FIELD SPEEDLING MIX

2 compost (sifted .5 inch screen)

1 coir fiber (premoistened)

1 vermiculite (medium/fine)

3 cups blood meal*

*This amount of blood meal is based on when the

measure of one part is equal to a wheelbarrow.

6-PACK MIX

2 compost

2 used flat mix

1 coir fiber

1 sand

LIQUID SUPPLEMENTAL FERTILIZER

Using watering can, per gallon of water:

1/4 cup liquid fish emusion

1/2 tsp. Kelp powder

Using foliar sprayer:

Also add 1/4 tsp. sticker-spreader (surfactant),

added last into the tank to avoid excess foaming (see

Resources section)

Mix ingredients in a little water in a bucket, then

pour into a 3-gallon backpack sprayer and fill to the

line with more water. For basal applications, remove

spray nozzle.

Fertigation is best done in the early morning or in

the evening.