High K (Potassium) Foliar Fertiliser

Fertilising made simple!

Kendon High K is broad spectrum foliar fertiliser using EDTA chelated trace elements, quickly absorbed by leaves and roots.

Potassium enriched liquid plant nutrient for leaves and roots, with chelated trace elements for:

Product type

Plant Nutrients – Fertiliser

Description

High potassium fertiliser with essential chelated trace elements to boost leaf sugar levels (brix) of all plants.

Key Features & Benefits

Target

Pack sizes

1L, 5L, 20L, 200L, 1,000L

Active ingredients

10N:8P:20K, Boron, Iron, Manganese, Molybdenum, Zinc
Product image of High K Foliar Fertiliser

Directions and How to Use

When to Use

Restraints and Cautions

Related products

What is a potassium-enriched plant food and how does Kendon High K benefit all plants?

Kendon High K is a versatile supplement formulated to enhance growth and vitality in fruit, vegetable, and ornamental plants. Potassium plays a vital role in plant development, boosting flower colour and longevity, improving fruit quality, and strengthening roots for better nutrient uptake. This supplement also helps plants resist disease and tolerate stress, ensuring healthy growth in various conditions. When your regular fertiliser doesn’t provide enough potassium, Kendon High K offers a balanced solution for vibrant blooms and productive harvests.

As a versatile liquid potassium fertiliser, Kendon High K is suitable for a wide range of plants, including pome fruits (like apples and pears), stone fruits, citrus, leafy and root vegetables, as well as flowering ornamentals, lawns, and turf. Its balanced nutrient profile supports healthy growth, vibrant blooms, and robust yields across both edible and ornamental plantings.

Potassium is essential for plant cell development, sugar movement, and water regulation. When applied during the growing season, this Kendon High K product is used as a vegetable fertiliser or fruit fertiliser, that helps produce fruit and vegetables with enhanced colour, firmness, and flavour, while also improving their ability to store well after harvest. This means your crops not only look better but also maintain quality for longer periods.

Yes, Kendon High K can be combined with most pesticides for effective foliar application, as these often contain sufficient wetting agents. When using High K on its own, it’s beneficial to add a non-ionic agricultural wetting agent, such as Kendral 600, to ensure thorough and even coverage of plant foliage, especially on hard-to-wet plants.

Yes, a fertiliser with a higher potassium content is effective for use on lawns and turf, promoting stronger root systems and improved resilience. Regular application of Kendon High K can increase grass resistance to wear and stress, making it ideal for sports fields, high-traffic areas, and ornamental lawns that require durability and lush appearance.

In addition to its rich potassium content, Kendon High K contains nitrogen and phosphorus for balanced nutrition. Essential trace elements are also included: boron and molybdenum (as sodium salts).  Copper, iron, magnesium, manganese, and zinc – all added as chelates for instant uptake by plants. These nutrients support overall plant health, growth, and stress resistance.

Kendon High K can be applied as a foliar spray or through overhead irrigation, making it easy to integrate into your existing nutrition program. It is compatible with most insecticides and fungicides, except for alkaline materials like Lime Sulphur, White Oil, or Bordeaux. Always read product restraints and compatibility notes before mixing.

Kendon High K is specially formulated for fruit trees, providing a high level of potassium to boost fruit size, flavour, and colour. Its balanced NPK (Nitrogen, Phosphorus, Potassium) profile and chelated trace elements support healthy growth, strong roots, and improved yields in apples, citrus, and stone fruits. Rapid absorption makes it ideal for foliar or soil application, helping Australian growers achieve vibrant, productive trees throughout the season.

For optimal results, apply a potassium-rich fertiliser like Kendon High K during periods of rapid growth, flowering, fruit set, or when plants are under stress from unfavourable weather. This ensures your plants have access to readily available potassium when they need it most, supporting healthy blooms and abundant harvests.

Crop Rate of Application Timing
Bananas
35L per 1 000L of water. Spray to runoff.
August / September, December, February, April
Fruit Crop
1L to 1.5L per 1000L of water, applied over 1 Ha.
Apply 3 to 4 times as required.
Vegetable Crops
1L to 2L per 1000L of water, applied over 1 Ha.
Apply 3 to 4 times as required.
Onions
15L per 1000L of water. Spray to runoff.
One month before harvest.
Potatoes, Tomatoes
2L to 3L per 100L of water, applied over 1 Ha.
Start when good leaf growth established. Continue as required.
Lucerne
2L to 3L per 1000L of water, applied over 1 Ha.
Two weeks after first cut.
Playing Fields
20L per 1000L of water, applied over 1 Ha.
Apply when potassium supplement is required.
Trickle Irrigation
All Crops
QLD, NWS, VIC only
25L per Ha, per week
Apply during last third of irrigation cycle, to ensure placement of fetiliser near roots.

Kendon High K mixes well with most insecticides and fungicides, but should not be combined with alkaline products such as Lime Sulphur, White Oil, or Bordeaux, as these may cause precipitation or reduce effectiveness. Always check compatibility and follow label instructions for best results.

If your plants show signs of magnesium deficiency, you can add 25g of magnesium sulphate (Epsom salts) per 100L of diluted Kendon High K solution immediately before use. Do not add magnesium sulphate to concentrated High K, as this can cause precipitation.

Kendon High K provides a comprehensive nutrient profile per dry weight:

Analysis Total Product Basis % W / V Dry Weight Basis % W / W
Total Nitrogen (N) as Urea
10
15
Total Phosphorus (P)
8
12
Total Potassium (K)
20
30
Boron (Bo)
0.0088
0.0127
Copper (Cu)
0.017
0.025
Iron (Fe)
0.034
0.049
Magnesium (Mg)
0.0099
0.0144
Manganese (Mn)
0.017
0.025
Molybdenum (Mo)
0.00023
0.00033
Zinc (Zn)
0.006
0.0089
Biuret (Maximum)
0.015
0.022

This blend ensures your plants receive all the essential macro and micronutrients for vigorous growth and productivity.

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