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(excluding 50 litre pot size and above or trees taller than 3.00m, or Highlands and Islands - contact us
for a quote)

Got a query? call us on 01905 888 098

(Excluding 50 litre pots and above or trees over 3.50m tall (inc the pot),

unless specifically advertised on the product page and
Highlands and Islands- Contact us for a quote)

Biobizz Alg-A-Mic Seaweed Biostimulant – number 1 product for healthy plant growth


Alg-A-Mic Seaweed Biostimulant

The ultimate plant stress reliever and growth promoter.  Alg A Mic is a pure organic seaweed extract full of natural plant growth hormones and precious micro-nutrients.

  • Great for producing a healthy root-system
  • works with Rootgrow mycorrhizal fungi to help colonise a rootsystem with beneficial fungi – hugely important for your Euc
  • Misted on to foliage – protects against wind scorch and sun burn

Sizes Quoted are the approximate height band of the tree above compost level, ie. the height of the tree once planted into the ground. Please note: Eucalyptus are living plants and can grow almost all year round, occasionally we may supply you with a plant that is slightly taller than your order. If this might cause you problems, please include a note with your order.

Click the dropdown below to view our different sizes & prices.



Biobizz Alg-A-Mic Seaweed Biostimulant

What is it?

The ultimate plant stress reliever and growth promoter. Alg A Mic is a pure organic seaweed extract full of natural plant growth hormones and precious micro-nutrients. Hand-crafted in small batches from on a special type of kelp Ascophyllum nodosum, by using a cold pressing technique. This means that all the goodness found in this kelp product is not destroyed by using other traditional production methods such as heat, chemical digestion or dehydration. Ascophyllum nodosum is a pretty unique seaweed being the only species in the genus Ascophyllum and growing only in the cold waters of the northern Atlantic Ocean.

Biobizz Alg-A-Mic Seaweed Biostimulant

Why use it?

  • A foliar application of Alg A Mic coats the leaves with a soothing alginate (jelly-like substance). The polyamines in the kelp help to increase plant tolerance to abiotic stresses such as wind scorch and sun burn, whilst also helping the plant fight fungal and microbial attack (biotic stresses)
  • Alg A Mic stimulates photosynthesis and chlorophyll production, helping the plant maintain lush foliage (the food factory of the plant) and therefore efficient food production for healthy growth.
  • Alg A Mic promotes healthy roots leading to quicker plant establishment. This means higher yields and better quality; crucial if you are growing for cut foliage.
  • The relationship between plant growth, soil microflora (beneficial fungi and bacteria) and the seaweed Ascophyllum nodosum has been the subject of intensive study concluding that the seaweed is effective as a fertilizer, biostimulant and soil conditioner. When applied as a root drench on day 4 after planting your Euc with Rootgrow mycorrhizal fungi, the cytokinin in the seaweed extract helps the fungus colonize the tree roots, aiding faster establishment and a healthier tree.
  • It can be used on all manner of horticultural crops. We have been advised that there isn’t a cabbage plant grown commercially in the UK that has not been treated with a seaweed spray at planting out!

A bit for the Plant Geeks: Alg A Mic contains all manner of biochemical goodies: amino acids, carbohydrates, phlorotannins, polyamines, and vitamins. In combination with each other, these natural active compounds impact upon plants in different ways according to the age of the plant and its condition. The plant growth hormones found in this kelp are cytokinins, gibberellins and auxins and they are absorbed through the foliage. Auxin is sent down to the roots where, along with phlorotannins, it helps build a healthy root system.

Biobizz Alg-A-Mic Seaweed Biostimulant

Top tip! Unlike your Eucs which love full sun, do keep your bottles of seaweed in the dark. Sunlight will turn the green juice to brown juice


Useless fact: Seaweed has been used for human consumption, agriculture/horticulture and animal husbandry for 1000’s of years; the Romans used to feed it to their horses!

Additional information

Weight 0.5 kg
Dimensions 30 × 20 × 10 cm


How to Use

Shake well before use.

Alg A Mic is a highly concentrated product; measure with a non-food measuring cup or jug.


Watering Can – Use as a root drench.

Add concentrate to half the required volume of water then top up to full volume.

Apply with a watering can with fine rose to roots and leaves.

1-4 ml per litre of water. Repeat every 14 days from April through to September

Your watering can should say it’s capacity on it somewhere, but if it doesn’t you can work it out – fill a 1 litre jug or empty plastic bottle with fresh water and tip it in to your watering can, repeat and count how many times it takes to fill your can, simples!

As a Guide; a typical small watering can contains 4-5 litres so will require 1 teaspoon (5ml) at low dose or 4 teaspoons (20ml) at highest concentration.

a typical medium watering can contains around 10 litres so will require 2 teaspoons (10ml) at low dose or 8 teaspoons (40ml) at highest concentration.

It is best if you can keep your measure for garden use, try not to eat your breakfast with it!

Hand held Sprayer – Use as a foliar spray

1-3 ml in 1 litre water, or 5-10 ml in 5 litres of water. Spray as a very fine foggy mist over the foliage early morning or evening.  Repeat up to 4 times at 14 day intervals.

For further details see label.

Storage and Safety

Do not consume.

Child and Pet safe.

Do not mix with copper-based fungicides.

Store in a cool, dark, dry, secure location between 0-30 degrees C.

Use within 12 months of delivery or by use-by date.


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