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KF-20

Concentrated Biostimulant for Soil & Plant Health

A multi-purpose preparation, suitable for application by spraying as well as through irrigation systems, designed to produce an optimal nutrient interface for the plant’s requirements and to prevent over-fertilization with minerals and salts.

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Natural Product

Made in Israel

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A multi-purpose concentrated liquid biostimulant for soil and plant nutrition

KF-20 is similar in its properties and ingredients to KF-10, but is many times more concentrated. You can find the preparation KF-20.

Multipurpose: The product is suitable for application by spraying as well as through irrigation systems, designed to produce an optimal nutrient interface for the plant’s requirements and to prevent over-fertilization with minerals and salts.

KF-20 consists of a long line of natural ingredients: algae concentrates, proteins, vitamins, vegetable oils, minerals, salts, sugars and plant extracts, combined in a unique formula. The preparation acts on the metabolic mechanisms of cells in plant and root tissues, as well as of populations of microorganisms in the soil. It improves the plant’s ability to absorb minerals and transport them through tissues, as well as its ability to produce assimilates, and its ability to withstand heat and drought stress conditions.

KF-20 concentrated preparation
The concentrated preparation has all the good properties of the more diluted material. Suitable as a base for fertilizer solutions that combine micro and macro elements, combined with a powerful natural biostimulant. The product is licensed for use in organic agriculture in Israel, in accordance with the regulations of the Israeli organic law and in accordance with the NOP standard.

KF-20 is sold in Israel in 250 cc and 1 liter containers specifically for the specialized gardening market, and also for use in fertilizing bedding and hydroponics.

To view the organic certification, click here.

Concentrated Multi-Purpose Biostimulant

Versatile Application:
KF-20 is suitable for both foliar spray and fertigation, formulated to create an optimal nutrient interface tailored to the plant’s needs—while helping prevent over-fertilization with minerals and salts.

Advanced Natural Formula:
Composed of a rich blend of seaweed concentrates, proteins, vitamins, plant oils, minerals, salts, sugars, and botanical extracts, uniquely formulated to support plant and soil health.

KF-20 acts on metabolic pathways in plant and root tissues, as well as on beneficial soil microflora. It improves mineral uptake, photosynthetic efficiency, and enhances resilience to heat and drought stress.


Concentrated Formula, Broad Use

KF-20 delivers all the benefits of its diluted counterpart, making it an ideal base for fertilizer blends combining macro and micro elements with powerful natural biostimulants.

  • Certified for organic agriculture in Israel

  • Compliant with NOP (USDA Organic Standard)

  • Available in 250 mL and 1 L bottles for specialized gardening, growing media, and hydroponics

General Usage Instructions – KF-20

For Home Fertigation Systems & Hydroponics

  • Mix 25 mL of KF-20 in 20 liters of water.

  • Set the dosing pump to a relative concentration of 0.2%–0.5%.

  • Apply with every irrigation cycle.


Boost Treatment (Shock Application)

  • Dilute 5 mL of KF-20 in 5 liters of water.

  • Apply all at once in a single irrigation cycle or split across 2–3 days.


Sprayer Application

  • Ensure sprayer is free of any pesticide or fertilizer residue.

  • Mix 5–10 mL of KF-20 in 10 liters of water, and spray foliage and around the base of the stem until runoff.

  • For small sprayers: Mix 1–3 mL per liter of water, spray until runoff.


Manual Drenching (with watering can)

  • Dilute at a 1:1000 ratio (1–5 mL of KF-20 per 1 liter of water).

  • Apply to foliage and root zone.

  • Repeat every 1–2 weeks.


Monthly Drenching Application

  • Mix 3 mL per 1 liter of water, stir well.

  • Apply 150–250 mL per plant.

Young Tree / Shrub:

  • Mix 1 mL in 3–5 liters of water, once a month.

Mature Tree / Shrub:

  • Mix 1.5–3 mL in 10–20 liters of water, once a month.

80 cm Planter Box:

  • Mix 1 mL in 2.5 liters of water, once a month.

100 cm Planter Box:

  • Mix 1.5 mL in 3.5 liters of water, once a month.

30×30 cm Pot:

  • Mix 0.5 mL in 1 liter of water, once a month.

60×60 cm Pot:

  • Mix 1.5 mL in 3 liters of water, once a month.

80×80 cm Pot:

  • Mix 2 mL in 5 liters of water, once a month.


For Greenhouse Ornamental Production

  • Apply 100–200 mL per dunam, once a month.


Lawn Application

  • Recommended application method: Sprayer

Routine Treatment (10 m², once per month):

  • Mix 1 mL in 1 liter of water, spray until fully wet.
    No irrigation required after spraying.
    Recommended to combine with KF-SERFICO.

Boost Treatment after planting/renovation/overseeding (10 m², twice per month):

  • Mix 3 mL in 1 liter of water, spray until fully wet.
    No irrigation required after spraying.
    Recommended to combine with KF-SERFICO.

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