Kelp-based plant support for the growing season.
The Coastal Kelp Range is a small set of 1L concentrates made from responsibly farmed kelp, designed to complement Coastal Compost and support root establishment and seasonal plant care.
Three kelp concentrates for Cornwall, Devon and the south west
Coastal Fermented Kelp
Supports planting, transplanting and early root establishment.
Dilution and application rates are printed on the bottle label, contact us if you are unsure.
At planting or transplanting, and during the early rooting period.
Beds, borders, vegetables, shrubs and trees.
Do not apply undiluted. Store in a cool, dry place out of direct sunlight.
Coastal Unfiltered Kelp Soil Drench
A soil drench applied as part of a seasonal plant-care routine.
Dilution and application rates are printed on the bottle label, contact us if you are unsure.
As an occasional seasonal soil drench for established plants.
Trees, shrubs, beds and vegetables.
Do not apply undiluted. Store in a cool, dry place out of direct sunlight.
Coastal Filtered Kelp Foliar Spray
A filtered concentrate, diluted and applied to foliage during active growth.
Dilution and application rates are printed on the bottle label, contact us if you are unsure.
During active growth. Avoid applying in hot direct sun.
Vegetables, flowering plants, ornamentals and hungry crops such as tomatoes.
Do not apply undiluted. Test on a small area first if applying to delicate plants.
£69.99 for all three 1L bottles, delivery free
Buying the three bottles separately costs £89.97. As a bundle they cost £69.99 with free delivery, a saving of £19.98.
- 1 × 1L Fermented Kelp
- 1 × 1L Unfiltered Kelp Soil Drench
- 1 × 1L Filtered Kelp Foliar Spray
£60 for all three 1L bottles with a bulk bag or tipped load
Order a 600L bulk bag or loose tipped load of Coastal Compost together with all three 1L Coastal Kelp Range bottles for £60. Delivery of the compost is arranged as normal for that product; this bundle price saves £29.97 against buying the three bottles separately.
- 1 × 1L Fermented Kelp
- 1 × 1L Unfiltered Kelp Soil Drench
- 1 × 1L Filtered Kelp Foliar Spray
- Plus a 600L bulk bag or loose tipped load of Coastal Compost
Kelp farming, in proportion
No farmland or freshwater
Kelp cultivation needs no agricultural land, freshwater irrigation or conventional fertiliser inputs.
Takes up nutrients from the water
As it grows, kelp takes up dissolved nutrients such as nitrogen and phosphorus from the surrounding water.
Habitat and shelter
The ropes and fronds create three-dimensional structure that provides habitat and shelter for marine organisms.
Depends on the farm
The environmental benefits of individual farms depend on their location, scale and management, but responsible cultivation can combine useful production with positive ecological functions.
Read more about where our kelp comes from on From Sea to Soil.
How much do I need?
Each product is concentrated and designed to be used carefully through the growing season, not applied heavily. Dilution and application rates are printed on the bottle label, contact us if you are unsure.
Typical garden use
For most domestic gardens, one 1L bottle of each product should be enough for a full growing season when used as directed.
- 1L Fermented Kelp for planting, transplanting and early root establishment
- 1L Unfiltered Kelp Soil Drench for occasional seasonal soil drenches
- 1L Filtered Kelp Foliar Spray for light foliar applications during active growth
Avoid overuse
- Do not apply undiluted
- Do not keep increasing the dose if plants already look healthy
- Avoid repeated heavy applications
- Apply to moist soil where possible
- Do not apply in hot direct sun, especially for foliar sprays
- For foliar sprays, test on a small area first if applying to delicate plants