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    • Plant nutrient requirements

    To use the table below, simply search for the plant you're trying to grow and read across to determine the ideal pH and electrical conductivity range for the plant to be in for optimum growth!

    *Note that ppm is just EC x 700.

    Plant Name Plant Type pH Range EC Range PPM Range
    African Violets Flower 6.0-7.0 1.2-1.5 840-1050
    Antirrhinim Houseplant 6.5 1.6-2.0 1120-1400
    Aphelandra Houseplant 5.0-6.0 1.8-2.4 1260-1680
    Artichoke Vegetable 6.5-7.5 0.8-1.8 560-1260
    Asparagus Vegetable 6.0-6.8 1.4-1.8 980-1260
    Banana Fruit 5.5-6.5 1.8-2.2 1260-1540
    Basil Herb 5.5-6.5 1.0-1.6 700-1120
    Bean (Common) Vegetable 6.0-6.5 1.8-2.4 1400-2800
    Beetroot Root Vegetable 6.0-6.5 0.8-5.0 1260-3500
    Begonia Houseplant 6.5 1.4-2.4 980-1260
    Capsicums Vegetable 6.0-6.5 1.8-2.8 1400-2000
    Broccoli Vegetable 6.0-6.5 2.8-3.5 1960-2450
    Brussell Sprout Vegetable 6.5-7.5 2.5-3.0 1750-2100
    Cabbage Vegetable 6.5-7.0 2.5-3.0 1750-2100
    Carrots Vegetable 6.3 1.6-2.0 1120-1400
    Cauliflower Vegetable 6.0-7.0 0.5-2.0 1050-1400
    Celery Vegetable 6.5 1.8- 2.4 1260-1680
    Chicory Vegetable 5.5-60 2.0-2.4 1400-1600
    Chives Herb 6.0-6.5 1.8-2.4 1260-1540
    Chrysanthemum Flower 6.0-6.2 1.8-2.5 1400-1750
    Cucumber Vegetable 5.8-6.0 1.7-2.5 1190-1750
    Eggplant Vegetable 5.5-6.5 2.5-3.5 1750-2450
    Fennel Herb 6.4-6.8 1.0-1.4 700-980
    Ficus Houseplant 5.5-6.0 1.6-2.4 1120-1680
    Garlic Root Vegetable 6 1.4-1.8 980-1260
    Hot Peppers Vegetable 6.0-6.5 1.8-2.8 1400-2000
    Kohlrabi Vegetable 6.0 - 7.5
    Kale Vegetable 6.0 - 7.5 1.6-2.5 1120-1750
    Lavender Flower 6.4-6.8 1.0-1.4 700-980
    Leek Vegetable 6.5-7.0 1.4-1.8 980-1260
    Lemon Balm Herb 5.5-6.5 1.0-1.6 700-1120
    Lettuce Vegetable 5.5-6.5 0.8-1.2 560-840
    Marjoram 6 1.6-2.0 1120-1400
    Melon Fruit 5.5-6.0 2.0-2.5 1400-1750
    Mint Herb 5.5-6.0 2.0-2.4 1400-1680
    Monstera Houseplant 5.0-6.0 1.8-2.4 1400-1680
    Mustard Cress Vegetable 6.0-6.5 1.2-2.4 840-1680
    Okra Vegetable 6.5 2.0-2.4 1400-1680
    Onions Root Vegetable 6.0-6.7 1.4-1.8 980-1260
    Pak-choi Vegetable 7 1.5-2.0 1050-1400
    Parsley Herb 5.5-6.0 0.8-1.8 560-1260
    Parsnip Root Vegetable 6 1.4-1.8 980-1260
    Paw-Paw Fruit 6.5 2.0-2.4 1400-1680
    Pea Vegetable 6.0-7.0 0.8-1.8 980-1260
    Peppers Vegetable 5.8-6.3 1.8-2.8 1400-2000
    Pineapple Fruit 5.5-6.0 2.0-2.4 1400-1680
    Potato Vegetable 5.0-6.0 2.0-2.5 1400-1750
    Pumpkin Vegetable 5.5-7.5 1.8-2.4 1260-1680
    Radish Vegetable 6.0-7.0 1.6-2.2  840-1540
    Rhubarb Vegetable 5.0- 6.0 1.6-2.0 840-1400
    Rosemary Herb 5.5-6.0 1.0-1.6 700-1120
    Roses Flower 5.5-6.0 1.5-2.5 1050-1750
    Sage Herb 5.5-6.5 1.0-1.6 700-1120
    Silverbeet Vegetable 6.0-7.0 1.8-2.3 1260-1610
    Spinach Vegetable 5.5-6.6 1.8-2.3 1260-1610
    Squash Vegetable 5.0-6.5 1.8-2.4 1260-1680
    Strawberries Berry 5.5-6.5 1.8-2.2 1260-1540
    Sweet Corn Vegetable 6 1.6-2.4 840-1680
    Sweet Potato Vegetable 5.5-6.0 2.0-2.5 1400-1750
    Swiss Chard Vegetable 6.0 6.5 1.8-2.3 1260-1610
    Thyme Herb 5.5-7.0 0.8-1.6 560-1120
    Tomato Vegetable 5.5-6.5 2.0-5.0 1400-3500
    Turnip Root Vegetable 6.0-6.5 1.8-2.4 1260-1680
    Watercress Herb 6.5-6.8 0.4-1.8 280-1260
    Watermelon Fruit 5.8 1.5-2.4 1260-1680
    Zucchini Vegetable 6 1.8-2.4 1260-1680