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Article #4: pH Preferences Of Some Plants
The chemical symbol "pH" is used to indicate acidity or alkalinity. On a scale of 0 to 14, pH values from 0 to 7 indicate acidity; values from 7 to 14 indicate alkalinity; pH 7, the value for pure water, is regarded as neutral.
Quite Acid (4 to 5)
| Azalea |
Holly |
| Gardenia |
Ixora |
Moderately Acid (5 to 6)
| Fern |
Pine |
| Orchid |
Potato |
| Parsnip |
Pumpkin |
| Persimmon, Japanese |
Watermelon |
Acid. Near Neutral (6 1/2 to 7)
Beet
|
Kale |
| Broccoli |
Leek |
| Cantaloupe |
Lima Bean |
| Chives |
Marigold |
| Corn |
Onion |
| Cucumber |
Pea |
| Eggplant |
Peach |
| Endive |
Radish |
Slightly Acid (6 to 6 1/2)
| Allamanda |
Oyster Plant |
| Avocado |
Palm |
| Banana |
Papaya |
| Bean Bottlebrush |
Pecan |
| Citrus |
Pepper |
| Copper |
Philodendron |
| Croton |
Pineapple |
| Dracena |
Pittosporum |
| Fig |
Poinsettia |
| Grape |
Powderpuff |
| Gloxinia |
Schefflera |
| Hibiscus |
Shrimp-plant |
| Jasmine |
Squash |
| Live Oak |
Strawberry |
| Loquat |
Tomato |
| Mango |
Turnip |
|
Rutabaga |
Alkaline, Near Neutral (7 to 7 1/2)
| Alfalfa |
Geranium |
| Cabbage |
Lettuce |
| Carrot |
Nasturium |
| Cauliflower |
Petunia |
| Celery |
Sweet Pea |
The following is a partial list of available materials for "sheet composting" or compost piles, with some of their percentages of nitrogen, phosphorus, and potash:
|
% of Nitrogen |
% of Phosphorus |
% of Potash |
| Activated Sewage
Sludge |
4.00-6.00 |
|
|
| Banana Skins |
|
3.25 |
41.76 |
| Blood Meal |
7.00-15.00 |
|
|
| Bone Meal
(Also contains
potash and
calcium) |
5.00 |
22.00-35.00 |
|
| Cantaloupe Rind |
|
9.77 |
12.21 |
| Coffee Grounds |
2.08 |
.32 |
.28 |
| Corncobs |
|
|
50.00 |
| Corn Stalks and
Leaves |
.30 |
.13 |
.33 |
| Cottonseed Meal
(May increase
acidity of soil) |
6.00-9.00 |
|
|
| Crabgrass, green |
.66 |
.19 |
.71 |
| Fish Scraps, Fish
Meal, Fish Emulsion (May have pleasant odor) |
2.00-10.00 |
1.50-8.00 |
|
| Granite Dust |
|
|
8.00 |
| Grapefruit Skins |
|
3.58 |
30.60 |
| Human Hair Clippings (Get from
Barber Shop) |
16.00-18.00 |
|
|
| Manure |
3.00-4.00 |
|
|
| Oak Leaves |
.80 |
.35 |
.15 |
| Orange Culls |
.20 |
.13 |
.21 |
| Phosphate Rock |
|
30.00 |
|
| Pine Needles |
.46 |
.12 |
.03 |
| Tea Grounds |
4.15 |
.62 |
.40 |
| Wood Ashes |
|
1.00 |
4.00-10.00 |
Home > Lesson 49 - The Organic Garden; Avoiding Commercially Produced Foods - Why?
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