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Nutrient Additives and Plant Stimulators

Home / Hydroponic & Organic Gardening / Fertilizer and Plant Food / Nutrient Additives and Plant Stimulators

Athena Athena CaMg - Gallon

Designed to supplement either of our 2-part liquid formulas. Some cultivars and growing conditions may require higher doses of Calcium, Magnesium, Iron and Nitrogen during heavy growth and development phases.

Athena CaMg - Gallon

$31.50

Gaia Green Gaia Green Power Bloom, 20 kg

Power Bloom is a high phosphate fertilizer specifically formulated to support prolific flowering and fruiting. Excellent for root development and for all flowering and fruiting plants.

Gaia Green Power Bloom, 20 kg

$104.99

Down To Earth Down To Earth Azomite Sr POWDER - 5 lb

Slow-Release grade of AZOMITE volcanic minerals with particle size ranging from 4 to 200 mesh. Ideal for blending with other materials and amendments as a trace mineral resource to help meet complete plant nutritional needs

Down To Earth Azomite Sr POWDER - 5 lb

$12.99

Rhizoflora Purpinator 1 Gallon

Purpinator is a specialty nutrient additive formulated to deliver increased flavonoid, terpenoid, and resin production in your plants. In addition to these benefits, Purpinator will improve the coloration of plants with purple phenotypes. Much like its pr

Purpinator 1 Gallon

$85.48

Gaia Green Gaia Green Power Bloom, 2 kg

Power Bloom is a high phosphate fertilizer specifically formulated to support prolific flowering and fruiting. As a result, Power Bloom is our best fertilizer for root development and for all flowering and fruiting plants.

Gaia Green Power Bloom, 2 kg

$28.99

Down To Earth Down To Earth Fish Bone Meal - 5 lb

Fish Bone Meal is a marine based alternative to traditional steamed Bone Meal and is wonderful for all flowering plants, trees and shrubs. A great source of phosphorus and calcium, Fish Bone Meal also contains a small amount of organic nitrogen and is an

Down To Earth Fish Bone Meal - 5 lb

$17.20

Plant Success Plant Success King Crab - 32 oz

Increase yields, maximize phosphorous uptake, and add life to the root zone! The active microbes in King Crab were specifically selected to enhance root zone performance during the vegetative stage and increase yields in the flowering stage.

Plant Success King Crab - 32 oz

$59.99

Fish Head Farms Fish Sh!t Organic Soil Conditioner - 500 ml

By introducing a wide variety of beneficial bacteria and microorganisms in to the rhizosphere, Fish Sh!t creates an optimal symbiotic relationship between plant and soil.

Fish Sh!t Organic Soil Conditioner - 500 ml

$75.00

$56.25

Plant Success Plant Success Orca - 16oz

Premium Liquid Mycorrhizae with Beneficial Bacteria. Orca is a highly concentrated LIQUID mycorrhizal and beneficial bacteria product. It brings together 4 highly effective endo mycorrhizal species with 14 super effective bacteria strains. This all-in-one

Plant Success Orca - 16oz

$42.49

Down To Earth Down To Earth Rose and Flower Mix (4-8-4) - 5 lb

Down To Earth Rose & Flower Mix is outstanding for all types of roses, bulbs, flowering shrubs and even onions and garlic. Apply when planting new roses, bulbs and perennials and use throughout the season when new growth appears on existing plants.

Down To Earth Rose and Flower Mix (4-8-4) - 5 lb

$17.99

Canna Canna CalMag Agent 5L

CANNA CALMAG AGENT is a calcium and magnesium mineral nutrient designed to improve water quality for calcium sensitive systems, such as when using reverse osmosis water with a coco medium. Our CANNA CALMAG AGENT increases water hardness, without disruptin

Canna CalMag Agent 5L

$71.22

Xtreme Gardening Xtreme Gardening Azos 6 oz

Azos is a beneficial microbe that sparks new root development and boosts growth. Azos works by rapidly increasing plant production of IAA (indole-3 acetic acid)–a natural plant hormone, affecting cell division, growth rates and plant and root development.

Xtreme Gardening Azos 6 oz

$35.08

LOTUS Lotus Pro Series Carboflush - 9 oz

Lotus Pro Series Carboflush is designed to remove excess nutrient buildup stored within plants and medium, and acts as a catalyst for flushing your plants in their final stage of growth, while still providing the necessary components for microbial activit

Lotus Pro Series Carboflush - 9 oz

$15.99

LOTUS Lotus Pro Series Cal/Mag - 15 oz

Lotus Pro Series Cal/Mag is a premium source of the two most readily absorbed secondary nutrients, integral for balanced and healthy growth, essential for coco based grows.

Lotus Pro Series Cal/Mag - 15 oz

$15.99

Down To Earth Down to Earth Granular Humic Acid 5 lb

A highly concentrated source of humic acids ideal for use on fields, turf and vegetable gardens. Derived from the ancient remains of decomposed organic plant materials, humic acids enhance nutrient uptake and stimulate soil microbial life. Naturally occur

Down to Earth Granular Humic Acid 5 lb

$14.99

Plant Success Plant Success Great White Mycorrhizae 8 oz

The endo and ecto mycorrhiza, beneficial bacteria and trichoderma build a microbial system in and on plant roots which enhance water and nutrient uptake. Great White can be used in hydroponics, field agriculture or home gardening. It is best used as a see

Plant Success Great White Mycorrhizae 8 oz

$77.51

Plant Success Plant Success Great White Mycorrhizae 4 oz

The endo and ecto mycorrhiza, beneficial bacteria and trichoderma build a microbial system in and on plant roots which enhance water and nutrient uptake. Great White can be used in hydroponics, field agriculture or home gardening. It is best used as a see

Plant Success Great White Mycorrhizae 4 oz

$43.08

Canna Canna Bio Boost 1L

BioBOOST by BIOCANNA is a natural additive that promotes bigger blooms and stronger flavors in flowers to create a high-quality yield. BioBOOST enhances the rate plants absorb nutrients, and is to be used during the start of the blooming period. BioBOOST

Canna Bio Boost 1L

$105.80

Down To Earth Down to Earth Neem Seed Meal 5lb

Neem Seed Meal is produced during the extraction of oil from the seed of the Indian Neem tree (Azadiracta indica). It is an excellent way to strengthen root systems, improve plant immunity and balance nutrient levels in the soil. Neem Seed Meal can be mix

Down to Earth Neem Seed Meal 5lb

$25.99

Down to Earth Alfalfa Meal 5 lb

An excellent soil conditioner, Alfalfa Meal is a rich source of trace elements and natural growth stimulants. Recommended for all flowering shrubs and especially roses, Alfalfa Meal accelerates growth and promotes larger, more plentiful blooms. It is also

Down to Earth Alfalfa Meal 5 lb

$0.00

General Hydroponics GH Ripen Quart

Ripen 0.5-7-6 promotes increased and abundant flowering with greater oil and fragrance production. Ripen is highly concentrated and provides macronutrients that are primarily responsible for flower and fruit growth. Ripen is a liquid nutrient that has bee

$44.96

Down To Earth Down To Earth Bone Meal (3-15-0) - 5 lb

A wonderful source of phosphorus and calcium for flowering plants, trees and ornamentals, Bone Meal is recognized as the ideal organic fertilizer when planting bulbs to promote strong root development and enhance early season growth. One of the indispensa

Down To Earth Bone Meal (3-15-0) - 5 lb

$18.99

Down To Earth Down To Earth Blood Meal (12-0-0) - 5 lb

A high nitrogen source, our Blood Meal is guaranteed to promote rapid, green growth. A wonderful fertilizer for heavy feeders like corn, spinach, salad greens and garlic in the early spring, it also helps compost piles heat up and break down fast.

Down To Earth Blood Meal (12-0-0) - 5 lb

$24.09

Down To Earth Down To Earth Acid Mix (4-3-6) - 5 lb

A fertilizer blended specially for acid soil loving plants like rhododendrons, azaleas, hydrangeas, evergreen trees and shrubs, blueberries, raspberries and other plants that thrive in a low pH soil. To encourage lush flowers and fruit, apply Acid Mix in

Down To Earth Acid Mix (4-3-6) - 5 lb

$16.99