Tomato Feed & Cal-Mag Pair | Marked Fruit

Overview The Science How to Use FAQ Made by Growers · Backed by Science Tomato feed and Cal-Mag for fruit that marks at the blossom end Tomato 3-4-6 Cal-Mag 750 g Calcium for tomatoes Entry-size pair Packed in Stockport Compostable bags Tomato feed and Cal-Mag is the pair for a mid-summer problem: the blend is feeding the crop, but fruit still marks at the blossom end. The Cal-Mag listing already owns cal mag for plants. The Calcium for Tomatoes collection owns the chemistry question. The tomato blend feeds the crop steadily through the season. The Cal-Mag covers calcium and magnesium when erratic watering stops calcium reaching the fruit. Together they deal with both halves of what most growers meet in July: feeding looks right, fruit still browns at the blossom end. What is in the pair: Organic Tomato Fertiliser — 1.5 kg (two 750 g bags); Cal-Mag for Plants — 750 g. Entry-size packs. Each product keeps the application rate on its own listing; we have not set a combined rate. Blossom end rot on tomatoes is usually water as much as calcium. Cal-Mag keeps supply up; it does not replace a steady can. Read Calcium for Tomatoes and the Cal-Mag listing before treating this as a cure. More in Tomatoes & Edibles and Bundles & Kits. Also sold on their own Both are also sold on their own — Tomato Fertiliser · Cal-Mag for Plants 1.5 kgTomato blend 750 gCal-Mag Own ratesOn each listing WaterStill the other half When this pair is the right buy Tomato feed and Cal-Mag in growbags and pots, where peat-free mixes hold little of their own Fruit that marks at the blossom end while the plant otherwise looks fed Greenhouse tomatoes on rainwater, which carries almost no calcium Growers who already buy tomato feed and Cal-Mag in the same week Feed plus calcium and magnesium Tomato plant feed for the season; Cal-Mag as the calcium and magnesium top-up Honest about watering: calcium has to reach the fruit Each product keeps its own rate Tomato feed on its own Enough if fruit is clean and water is steady The Tomato & Vegetable pair is tomatoes plus the plot, not tomatoes plus calcium Packed in Stockport Dr Forest packs this in Stockport, Greater Manchester. Cal-Mag is mined gypsum and kieserite with a trace of boron. Made with organic ingredients; we do not call it certified organic. Made by Growers. Backed by Science. The Science Calcium for tomatoes, and why watering still decides it Blossom end rot tomatoes is a calcium failure at the fruit, not always a calcium failure in the bag. Calcium is immobile in the phloem; it travels with the transpiration stream. Uneven watering, a dry spell then a soak, or a wildly fluctuating greenhouse, will mark fruit even when the soil analysis looks fine. Cal-Mag for plants here is gypsum and kieserite, pH-neutral, with a trace of boron because boron and calcium work together in cell walls (Brown et al., 2002). It is a soil product, not a foliar spray, and not a human supplement. This page does not invent a combined rate and does not claim to cure blossom end rot. The mechanism is supply plus steady water. Calcium in the bag helps. Calcium only reaches the fruit if the plant is transpiring steadily. 01 Tomato feed for bulk nutrition 3-4-6 through the season, rate on the tomato bag. 02 Calcium and magnesium on the side Cal-Mag is the structural-cation bag, not another NPK. 03 Boron as a trace partner Present in Cal-Mag at a small, labelled inclusion; do not stack a second boron product. 04 Watering is not optional Erratic watering is still the usual cause of marked fruit. References Marschner, P. ed. (2012). Marschner's Mineral Nutrition of Higher Plants, 3rd ed. Academic Press. Brown, P.H. et al. (2002). Boron in plant biology. Plant Biology, 4(2). Shainberg, I. et al. (1989). Use of gypsum on soils: a review. Advances in Soil Science, 9. Kopittke, P.M. & Menzies, N.W. (2007). The basic cation saturation ratio and the 'ideal' soil. SSSA Journal, 71(2). Canellas, L.P. et al. (2015). Humic and fulvic acids as biostimulants in horticulture. Scientia Horticulturae, 196. Wang, Y. et al. (2023). Combined organic–mineral fertilisation meta-analysis, 7,859 data pairs. Science of the Total Environment. How to Use How to use Tomato Feed & Cal-Mag Pair Two products, two rates Use the tomato listing for the feed. Use the Cal-Mag listing for calcium and magnesium. Cal-Mag is typically added at a tenth of the feed weight on that page; follow that page, not a pair average. Not a blossom end rot cure on its own Keep watering even. Do not treat marked fruit as something a stronger dose will reverse; calcium fixes new growth, not the fruit already damaged. Tomato feed Rate: On the tomato bag | Frequency: Through the season Organic Tomato Fertiliser Cal-Mag Rate: On the Cal-Mag listing | Frequency: With the feed, as that page states Cal-Mag for Plants. Usually 10% of the feed weight on that listing. Do not invent a pair handful. Apply tomato feed as the tomato page describes. Add Cal-Mag as the Cal-Mag page describes, to the root zone, not through a sprayer. Water steadily. A dry-then-flood cycle will still mark fruit. Background: Calcium for Tomatoes. Use with Need vegetables as well as tomatoes? Tomato & Vegetable Feed Pair. Liquid calcium on clay is a different job: Liquid Gypsum. FAQ Tomato Feed & Cal-Mag Pair: questions Does this stop blossom end rot tomatoes? It supplies calcium and magnesium and the tomato feed. Watering still has to be steady. Already-marked fruit will not un-brown. What is cal mag for plants in this pair? Gypsum and kieserite with a trace of boron and fulvic acid. Full detail on Cal-Mag. It is not a human supplement. Is there a combined rate? No. Follow each listing. Cal-Mag has its own 10% rule on that page. Can I spray it on the leaves? The tomato blend is a soil feed. Cal-Mag is a soil product and will clog a sprayer. Root zone only. Is this organic? Made with organic ingredients. We do not call it certified organic. Where is it made? Stockport, Greater Manchester. What sizes are in the pair? 1.5 kg tomato blend (two 750 g bags) and 750 g Cal-Mag.