{"product_id":"humboldts-secret-calmag-iron-calcium-magnesium-chelated-iron-for-vegetative-flowering-growth-32-oz","title":"Humboldts Secret CalMag \u0026 Iron — Calcium, Magnesium \u0026 Chelated Iron for Vegetative \u0026 Flowering Growth | 32 oz","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eHumboldts Secret CalMag \u0026amp; Iron is a balanced nutrient supplement designed to deliver calcium, magnesium, and chelated iron across a wide range of growing media. Whether you’re feeding in soil, coco, hydroponics, or RO water, this blend aims to support steady, healthy growth from the vegetative phase through flowering.\u003c\/p\u003e\u003cp\u003ePackaging updates may occur during our transition. The formula remains the same, preserving performance you can rely on.\u003c\/p\u003e\u003ch3\u003eKey benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCalcium and magnesium support sturdy stems, stronger structure, and improved leaf nutrition.\u003c\/li\u003e\n\u003cli\u003eChelated iron helps maintain vibrant leaf color and robust chlorophyll transport in greens and flowering crops.\u003c\/li\u003e\n\u003cli\u003eFast-acting recovery from nutrient imbalances can help plants rebound quickly within busy growing schedules.\u003c\/li\u003e\n\u003cli\u003eMaximum absorption power improves utilization of essential minerals across feeding cycles.\u003c\/li\u003e\n\u003cli\u003eReliable performance across setups including hydroponics, soil, coco, and RO water.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy it matters in the garden\u003c\/h3\u003e\u003cp\u003eWith a balanced mineral blend, growers may experience stronger stems, healthier blooms, and more consistent fruit quality across seasons. The product is designed to support both vegetative vigor and flowering potential without tying you to a single method.\u003c\/p\u003e\u003ch3\u003eBest uses and practical tips\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncorporate as part of a regular feeding schedule to maintain calcium, magnesium, and iron availability.\u003c\/li\u003e\n\u003cli\u003eTry it in coco coir or RO water to support nutrient uptake in challenging water conditions.\u003c\/li\u003e\n\u003cli\u003eCompatible with indoor and outdoor gardens, from leafy greens to flowering ornamentals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReal-world use cases\u003c\/h3\u003e\u003cp\u003eIn indoor setups like tomato or leafy greens projects, users may notice steadier leaf color and improved stem strength when used consistently. Outdoor herbs and vegetables can benefit from improved nutrient balance during heat spells, helping foliage stay green and vigorous.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is Humboldts Secret CalMag \u0026amp; Iron used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It provides calcium, magnesium, and chelated iron to support plant growth across media, from soil to hydroponics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this CalMag \u0026amp; Iron suitable for flowering crops?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the blend helps with fruit set and overall vigor, while supporting balanced nutrition in various systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Humboldts Secret","offers":[{"title":"Default Title","offer_id":45741454393530,"sku":"B01GB23TEY","price":69.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/humboldts-secret-calmag-iron-packaging.jpg?v=1774817632","url":"https:\/\/gardencanada.ca\/products\/humboldts-secret-calmag-iron-calcium-magnesium-chelated-iron-for-vegetative-flowering-growth-32-oz","provider":"Garden Canada","version":"1.0","type":"link"}