$39.95
Pumice is a light siliceous vesicular volcanic rock that is suitable for use in horticulture and hydroponics. Pumice is a popular growing medium for Cacti, Succulents, Orchids, Bonsai and many others. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores.
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Pumice 25 Litres
Pumice is a light siliceous vesicular volcanic rock that is suitable for use in horticulture and hydroponics. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores. Surface tension around the outside of the pumice particles increases water-holding capacity of the growing medium. Pumice is a popular growing medium for Cacti, Succulents, Bonsai, Orchids and many other plants.
Our pumice is mined from a land-based resource, within 50kms of Lake Taupo in the North Island of New Zealand, and it is characterized by its relative hardness and lightweight in comparison to competing aggregates. The washing and screening of our pumice particularly for horticultural applications means that no ‘fine’ particles are included. Unwashed pumice can cause ‘concreting’ and higher water holding capacity than required, consequently affecting root development.
This hardness and porosity allows free drainage lowering the risk of root-rot diseases.
Pumice grades:
What is Pumice?
Pumice is a lightweight foamy volcanic rock. The bubbles in the matrix are brought about by rapid cooling and depressurisation when the lava is ejected from the volcano. Pumice provides an ideal balance between water-holding capacity and air-filled porosity, allowing aerobic conditions around roots while containing an adequate supply of water. The high surface area is ideal for root hairs to penetrate and gain good anchorage for stable plants. Our pumice is mined in the beautiful North Island of New Zealand, from a site near Lake Taupo of New Zealand, and it is characterized by its relative hardness and lightweight in comparison to competing aggregates.
Usage:
Use pumice for Orchid mixes, grades 7-20 is particularly well suited for orchid cultivation providing the balance of air and water combined with long life. Pumice will not rot or break down, it is less likely to wash out of the pot. For propagation use the smaller grade 1-2 and 1-7. Hardwood cuttings can be stuck in 100% pumice. The variation in particle sizes allows excellent basal contact for supply of water yet the porosity maintains aerobic conditions around the newly formed roots. Slow rooting species such as Conifers, Maples and Camelias are particularly well suited to propagation in pumice. Cacti and Succulents need to open and well-drained potting mix, pumice is ideal for this purpose. Mix 30% pumice with your preferred organic substrates. Pumice has been used extensively for green roof mixes where substrates need to be long-lasting, lightweight, free draining and moisture retentive.
Ideal For:
Properties:
GRADE ADMIX TYPE EXAMPLES
1-2mm 100% Pumice Hardwood cuttings. Slow rooters Conifers
1-2mm 50% Pumice / 50% Peatmoss Softwood cuttings. Murrayas, Viburnum
1-7mm 60% Pumice / 20% Coarse Sand / 20% Peatmoss Cacti / Succulents Echiveras
1-7mm 100% Pumice Hardwood cuttings. Slow rooters Maples, Camellias
1-7mm 40% Pumice / 30% Medium Bark / 30% Fine Bark Seedling mix, Pup mix. Cymbidiums, Cycads
1-7mm 40% Pumice / 30% Coarse Sand / 30% Peatmoss Stem cuttings Frangipanni, Cordyline
7-20mm 40% Pumice / 30% Coarse Bark / 30% Medium Bark Orchids Cymbidiums
Frequently Asked Questions
Q. Which pumice grade is best for growing Succulents?
A. According to the manufacturer, they suggest using mostly 1-4mm with a little 4-10 mixed though. The pumice should also be mixed with 50 to 75% of fine to medium organic matter like compost and garden soil.
Q. What is the PH of this pumice?
A. According to the manufacturer "The pH of Pumice is typically pH 6.7 to 6.9"
Q. What is the country of origin for this pumice?
A. It's from New Zealand.
Q. How much does a 25L bag weigh?
A. The weight of this item can vary significantly due to moisture content or the weight of pumice rock. We tested some bags at around 21kg but again this can vary.
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Pumice is a popular growing medium for Cacti, Succulents, Orchids, Bonsai and many others. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores.
UXP or unexpanded perlite is a more uniform, decorative and sterilised alternative to natural pumice. Popular for growing cacti, succulents, orchids, bonsai and others plants. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores.
Akadama is a form of volcanic pumice mined exclusively in Japan and is popular for growing Bonsai, Cacti, Succulents and other plants. Lightweight for easier pot handling. Drains perfectly if prepared correctly. Allows air to be drawn into the mix when watered. Maintains near-perfect moisture retention.
Please consider the Akadama Tsuti 3-6mm listed below as an alternative.
ONLINE ONLY. Pumice is a light siliceous vesicular volcanic rock that is suitable for use in horticulture and hydroponics. Pumice is a popular growing medium for Cacti, Succulents, Orchids, Bonsai and many others. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores.
Debco Cacti & Succulent Mix is the first professionally formulated mix for cacti and succulents for the home gardener and is based on special blends used by wholesale nurserymen. Contains SaturAid rewetting granules, to help water penetrate to the root zone.
Available in 10L and 25L bag sizes.
Debco Bonsai Mix is based on special blends used by wholesale nurserymen. It contains zeolite to hold and release nutrients in the soil to ensure the best possible growing conditions. It also absorbs and traps ammonium, reducing the chances of ammonium toxicity in your plants.
For Horticultural and other uses. AUSPERL perlite is a super lightweight potting media that is clean and easy to use as well as environmentally friendly, offering many advantages. The unique properties of perlite provides for excellent aeration and drainage while still ensuring good water retention.
Ausperl Perlite P400 & P500 is currently unavailable. Please consider Medium Chillagoe perlite instead of the P400 and Coarse Chillagoe Perlite instead of the P500. Listed below
Volcanic Rock Dust (Trace Mineral Fertilizer) is great for mineralizing soils with Silica, Potassium, Phosphate, Magnesium, Iron, Nitrogen, Zinc and many more. Helps soften soils and gives fruit and vegies better taste and nutrition.
PRE-ORDERS OPEN! Currently out of stock with more due around July 7th. Any orders placed will not be sent until stock arrives.