N = Nitrogen, P = Phosphorous, K = Potassium (potash)
Nitrogen is essential for vigorous leaf growth
and tends to increase fruit set. Sources of Nitrogen are: Bloodmeal, Bone
Meal, Cottonseed Meal, Manure, and Activated Sludge.
Phosphorous is essential for strong root systems
and bright flowers. It can increase fruit development and seed yield.
Sources of Phosphorous are Activated Sludge, Bloodmeal, Bone Meal, Cottonseed
Meal, and Rock Phosphate.
Potassium is essential for cell division and strong
stems. It helps fight diseases, improves quality of fruit, and decreases
water requirement of plants. Sources of Potassium are: Greensand, Manure,
Compost, and Wood Ashes.
Trace Elements need for strong, healthy plants
are: Boron, Calcium, Cobalt, Copper, Iodine, Iron, Magnesium, Molybenum,
Sulfur, Tin, Zinc. Sources are: Oyster Shell Flour, Leaf Mold, Seaweed,
Phosphate Rock, and Compost.
AMMONIUM SULFATE: 21% N, 24% Sulfur. Application
Rate: 4 lbs. per 3" sawdust covering 100 sq. ft.
BLOODMEAL: 12% N, 3% P. Application Rate: Sprinkle
on damp soil or water after application.
CASCADE SOIL AID: Ground, composted bark with N
added. For acid-loving plants, mix with equal parts of sand or soil.
CHICKEN MANURE: 2-2-1. Application Rate: Variable.
GREENSAND: 1.5% P and 5% K. Helps soil absorb and
hold water. Application Rate: 25 lbs. per 100 sq. ft.
LEAF MOLD: 5% N. Encourages good root growth.
BLACK GOLD: 50% earthworm castings, 25% peat, and
25% Prelate. Rich and fine textured.
BONE MEAL: 4-21-1. Application Rate: 10 lbs. per
100 sq. ft.
CHARCOAL: Absorbs and holds N until plant can use
it. Absorbs odors. Purifies the mixture.
COTTONSEED MEAL: 7-3-2. Rated second only to manure
as a source of N Application Rate: 5 lbs. per 100 sq. ft.
JIFFY - MIX PLUS: Sterilized, pre-mixed, potting
medium of sphagnum, moss, and vermiculite.
LIME (DOLOMITE): Rich in magnesium. Can be used
to raise pH of soil. Application Rate: 5 lbs. per 100 sq. ft. every 3-4
OYSTER SHELL FLOUR: An excellent source of calcium
and trace elements.
ORCHID BARK: A medium for growing some types of
orchids. Available in fine, medium, or coarse grades.
PERLITE: A silica derivative - no nutritive value.
Keeps the soil aerated and retains some water. Sterilized.
PHOSPHATE ROCK: 65% P plus many minerals and trace
elements. Application Rate: 10 lbs. per 100 sq. ft. every 3-5 years.
STEER MANURE: 5-5-2 Builds soil rapidly. Application
MILLED SPHAGNUM: Excellent source of organic matter.
Holds moisture well.
PEAT MOSS: Loosens heavy soils, binds light soils,
retains water. Application Rate: 1 part peat to 2 parts soil.
PUMICE: Provides soil aeration and keeps soil from
VERMICULITE: Sterilized expanded mica. Keeps soil
aerated, provides water and nutrient-holding capacity.