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John Innes Potting Compost

JI #1 Base

7 parts sterilized loam
3 parts peat
2 parts sand or grit
Fertilizer: 4 oz / 8 gallons (3 grams / liter)
Lime or chalk: 3/4 oz / 8 gallons ( 0.5 grams / liter)

JI #2 Base: Same as 1 but double the Fertilizer and chalk
JI #3 Base: Same as 1 but triple the Fertilizer and chalk

JI Seed compost: The fresher the sterilization, the better the germination

2 parts sterilized loam
1 part moss peat
1 part sharp sand

The loam and peat is put through in 3/8 in (9mm) sieve.

To each bushel or 8gal(36 L) is added:
1-2 oz (42gm) superphosphate
1/2 oz Potassium nitrate
4-6 oz (21gm) ground limestone

Ericaceous Mix: Use the base but leave out the Lime

Soilless: 3 parts peat and 1 part sand

Potting Compost: (same as above)

7 parts sterilized loam
3 parts moss peat
2 parts sharp sand

The loam and peat is put through a 3/8 in (9mm) sieve.
To each bushel (8gal/36l) is added

3/4oz (21gm) ground limestone
4oz (110gm) 14-14-14 Osmocote

This makes John Innes Potting Compost No. 1.
For a richer mix simply double the quantity of
John Innes Base to make No. 2 or treble it to
make No.3

Listing of potting soils and what they are used for.

Articles

   Grow Delphiniums from Seed
   Container Gardening

Recipes

   Garden Loam Potting Soil
   John Innes Potting Compost
   Orchid Potting Mix
   Cacti Pottingl Mix
   Seed Starting Potting mix
   Alpines Potting Mix
   Shade Potting Mix
   Cutting Potting mix
   A. Knutson Potting mixes
   CORNELL MIXES
   Cornell Peat-lite Mix
   Cornell Foliage Plant Mix
   Cornell Epiphytic Mix
   Standard Potting Mix

 



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