Seacliff Tri-Kelp Powder – 50gms


Seacliff Tri-Kelp is a concentrated source of micronutrients, vitamins, and plant growth regulators. This powerhouse blend supports many aspects of plant growth and development.

Cost-effective way to add the benefits of seaweed into your plant care routine.

Improves soil structure.

Increases plants resistance to stress.

Growth Booster.

ACC Organic.

Made in New Zealand by Seacliff Organics.

Stocked Locally – Order today and your order will be shipped the following business day at 9am!

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Seacliff Tri-Kelp Powder Seaweed for indoor plants +
Price for both:   $25.40
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Seacliff Tri-Kelp Powder

NPK = 1 – 0 – 15

Seacliff Tri-Kelp is organic and made in New Zealand by the experienced team at Seacliff Organics in Otago.

Seacliff Tri-Kelp Powder provides your indoor plants with a nutrient-rich boost. It is a concentrated seaweed blend of three types:

Laminaria: Known for its rich nutrient content, Laminaria supports plant growth and overall health.

Sargassum: Packed with essential minerals, Sargassum enhances soil fertility and helps plants develop robust roots.

Ascophyllum Nodosum: Renowned for its natural growth stimulants, Ascophyllum Nodosum encourages strong and vigorous plant growth.

The blend is freeze-dried to make it a 100% water soluble powder. This means quick and efficient absorption by your plants.

Regular use of Seacliff Tri-Kelp Powder increases overall plant health by supplying essential nutrients, improving soil structure and boosting resistance to stress.

Is Tri-Kelp Powder a complete fertiliser?

No, Seacliff Tri-Kelp Powder works as a supplement to your usual fertilising routine. While it offers a rich blend of nutrients and growth stimulants derived from the three types of seaweed mentioned above, it may not provide all the essential elements that plants need for optimal growth.

Fertilisers typically contain a broader spectrum of nutrients, including nitrogen, phosphorus, and potassium (N-P-K), along with other micronutrients. These elements play specific roles in plant development, such as supporting leafy growth, root development, and flowering. Tri-Kelp Powder is specifically designed to harness the benefits of seaweed for plant health and growth.

We recommend using Seacliff Tri-Kelp Powder every month as a booster and to enhance your regular fertiliser.

Seacliff Tri-Kelp Powder

Recommended Usage for Indoor Plants:

10g = 1Tbsp

Foliar Spray:

Dilute 1 gram  of powder ( 1/3 of a teaspoon) per 1 litre of water. Add into a spray bottle and shake well. Spray foliage every one to two weeks.


Dilute 1 gram of powder (1/3 of a teaspoon) per 1 litre of water and water your plants every month. It can be mixed with your usual plant fertiliser.

Rooting Powder:

Dip cuttings in 1:1000 solution (1 gram per litre) 1/3 teaspoon.

Seedling Treatment:

Dip seedlings in 1:1000 solution (1 gram per litre) 1/3 teaspoon, or water in immediately after planting.

Seacliff Tri-Kelp is useful for a range of plants outdoors too:

Vegetables – 10 grams per 10 litres of  water up to 750 g/ha equivalent, apply every one to two weeks or as required.

Orchards & Vineyards – 10 grams per 10 litres water up to 1 kg/ha equivalent Apply just prior to flowering.

Ornamentals, Natives & Turf – 10 grams per 10 litres water up to 750 grams/ha equivalent, apply as required.

Broadacre Crops and Pasture – 100 – 200 grams/ha in 60 – 100 litre water, depending on canopy closure, apply as required.


  • Vegetables 1 kg/ha, apply every 1 – 2 weeks or as required.
  • Orchards & Vineyards 1 kg/ha, apply just prior to flowering or as required.
  • Ornamentals, Natives & Turf 1 kg/ha, apply as required.

Home Gardens:

  • For a 9 litre watering can, add 1 teaspoon of kelp and water in.

Can be used in conjunction with your usual fertiliser.

Use in a well ventilated area and wear a mask to avoid inhaling particles. Wear gloves and wash hands after use.

Nitrogen (N) 0.89%
Phosphorus (P) 0.00%
Potassium (K) 15.03%
Sulfur (S) 1.05%
Calcium (Ca) 0.45%
Magnesium (Mg) 0.17%
Alginic Acid 18%
Iron (Fe) 1.07%
Copper (Cu) 34ppm
Manganese (Mn) 92ppm
Zinc (Zn) 48ppm
Boron (B) 46ppm
Cobalt (Co) 8ppm
Molybdenum (Mo) 5ppm
Silicon (Si) 445ppm

Store sealed in a dry area.

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