
Packed with care
Every order is hand-packed in protective packaging and sent with tracked delivery, so it reaches you in one piece.
Free tracked delivery on orders over £60.
Black November at GrowTropicals
Black November at GrowTropicals
7 Day Live Arrival Guarantee Read more →
7 Day Live Arrival Guarantee Read more →

Prevents and corrects calcium and magnesium deficiencies
Key benefits
Biobizz Calmag has been designed for the professional grower and the hobbyist that needs an extra boost of Calcium and Magnesium in their grow. Calcium and magnesium are essential elements for proper plant growth and blooming, as they play a key role in cell production and photosynthesis.
Ca/Mg deficiencies are common, as in today’s world we cannot rely on tap water to ensure correct mineral concentration. Biobizz Calmag brings you a 100% organic and certified solution for Ca/Mg deficiencies.
This product brings the best of our 100% natural ingredients and presents them in a formula that will not alter your preferred feeding regime. Correct faulty water and deficiencies in an easy, controlled, and natural way with Biobizz Calmag.
BioBizz Calmag can be used with all plants in any growing media. BioBizz products are fully organic so are perfect for use with other organic, microbe first growing products like EcoThrive. We highly recommend using Ecothrive Neutralise to remove Chlorine or chloramine from the tap water. Lastly a top up of Ecothrive Biosys every 10-14 days will help keep your growing media full of beneficial microbes
In order to use BioBizz CalMag simply use the following dosage:
Deficiency prevention in Semi-Hydro (Pon or Leca): 0.5-1ml/ per litre of water
Deficiency prevention in Soil Mixes: 0.3ml - 0.8ml per litre of water
Deficiency correction in Semi-Hydro (Pon or Leca): 0.5-1.4ml per litre of water
Deficiency correction in Soil Mixes:0.3-1.2ml per litre of water
You can mix Biobizz CalMag with other nutrients when feeding your plants.Dose depends on your growing media and whether you are preventing or correcting a deficiency.
Based on your basket total, confirmed at checkout. Free delivery: Economy over £60 · Standard over £100 · Express over £150.
Every order is hand-packed and sent with tracked delivery.
Changed your mind? You can return unused items within 14 days of delivery. See our returns policy.
Your quick reference for choosing the right plant size. We group our plants by the diameter of their nursery pots which gives you a consistent way to understand scale.
Small but full of charm. These compact plants are perfect for desks, windowsills, and small shelves, or for building out a collection over time. Ideal if you enjoy watching your plants grow from the beginning. Approx. height: 10–20cm
A step up in presence, great for side tables, shelves, or styling in clusters. Easy to move around and perfect for adding greenery without taking up too much space. Approx. height: 25–35cm
Our most versatile size. Works beautifully on shelves, desks, and plant stands, offering a fuller look without dominating a space. A great balance between impact and flexibility. Approx. height: 25–50cm
More established plants with fuller foliage and stronger structure. Ideal for creating soft focal points in a room. Great for corners, beside furniture, or as standalone features. Approx. height: 40–70cm
Big, impactful plants designed for floors and open spaces. These are your statement pieces and are perfect for anchoring a room or transforming a corner with instant greenery. Approx. height: 60cm–1.3m
Changed your mind? You can return pots, gifts, accessories and other non-plant items. Email hello@growtropicals.com with your order number within 14 days of delivery, then send the item back within 14 days of telling us. You pay the return postage.
Items must come back unused and in their original condition. If an item has been used, we may reduce your refund by the value it has lost, and for used items this can be the full price.
Live plants cannot be returned because you have changed your mind, but they are covered by our Live Arrival Guarantee.
If something arrives damaged, faulty or wrong, email us with your order number and photos and we will put it right at no cost to you. Full details are in our returns policy.
Choose your delivery speed at checkout. Express orders placed before 1pm are dispatched the same day, otherwise the next working day. Standard orders are dispatched within 2 to 3 working days and Economy orders within 4 to 5 working days. Once dispatched, every order travels by 24 hour tracked courier.
Delivery is free on orders over £60 with Economy, over £100 with Standard and over £150 with Express. Below that, the charge depends on your basket total and is always shown at checkout before you pay. The full price list is in our shipping policy.
Orders without plants are dispatched Monday to Friday. If your order also includes plants, it goes out Monday to Thursday so the plants are not left in the courier network over the weekend. Delivery can take longer at busy times such as Black Friday and Christmas.
We could not find a close match for that. Ask us directly and a real plant person will reply.
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Every order is hand-packed in protective packaging and sent with tracked delivery, so it reaches you in one piece.
Free tracked delivery on orders over £60.

Add a gift message at checkout and we will handwrite it and pack it with your order.
Pair it with a plant for a complete gift.

Changed your mind? Send unused items back within 14 days of delivery and we will refund you.
Full details in our returns policy.
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