{"product_id":"gs-plant-foods-cal-mag-extreme-liquid-fertilizer-calcium-magnesium-iron-sulfur-1-gallon","title":"GS Plant Foods Cal-Mag Extreme Liquid Fertilizer – Calcium, Magnesium, Iron \u0026 Sulfur, 1 Gallon","description":"\u003cp\u003eGS Plant Foods Cal-Mag Extreme Liquid Fertilizer is a high-value supplement designed to complement your regular feeding routine. It combines calcium, magnesium, iron, and sulfur with trace elements to support a balanced nutrient profile for a wide range of plants.\u003c\/p\u003e\n\u003cp\u003eSupported by natural chelates, this formula helps nutrients move into the plant, aiding uptake during both vegetative growth and flowering. It is compatible with soil, growing media, or can be used as a foliar spray for targeted feeding.\u003c\/p\u003e\n\u003ch3\u003eKey benefits you may see\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStrong secondary nutrient coverage: high percentages of calcium, magnesium, and sulfur help round out primary nutrition.\u003c\/li\u003e\n  \u003cli\u003eTrace element support: iron, manganese, zinc, boron, and molybdenum work with your regular fertilizer to fill potential gaps.\u003c\/li\u003e\n  \u003cli\u003eFlexible use: mix with your usual fertilizers or water, and apply as a soil drench, root zone soak, or foliar spray.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eMix 1 teaspoon per gallon of water. Use up to two times per week. Stir before each use. The product is intended to supplement rather than replace your primary nutrient program.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere to apply:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSoil: infuse the root zone for steady uptake\u003c\/li\u003e\n  \u003cli\u003eGrowing media: works with coco, rockwool, and other media\u003c\/li\u003e\n  \u003cli\u003eFoliar: apply to the leaf surface for rapid nutrient delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGuaranteed analysis (by weight): Total Nitrogen 2.0% Nitrate N 2.0%; Calcium 2.5%; Magnesium 1.0%; Sulfur 1.0%; Iron 0.20%; Manganese 0.07%; Zinc 0.03%; Boron 0.005%; Molybdenum 0.0002%.\u003c\/p\u003e\n\u003cp\u003eWhy GS Plant Foods? This formula is designed to support regular feedings and help plants reach their potential with a balanced, nutrient-rich solution that is easy to use and integrates into existing feeding routines.\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 Cal-Mag Extreme used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A liquid supplement providing calcium, magnesium, sulfur and trace elements to balance secondary nutrients and support healthy growth when combined with your regular fertilizer program.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I mix and apply Cal-Mag Extreme?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Mix 1 teaspoon per gallon of water, stir well, and apply to soil, growing media, or as a foliar spray up to twice weekly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GS Plant Foods","offers":[{"title":"Default Title","offer_id":45788229337274,"sku":"B09M7LF4XP","price":113.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/gs-plant-foods-cal-mag-extreme-bottle.jpg?v=1776500315","url":"https:\/\/gardencanada.ca\/products\/gs-plant-foods-cal-mag-extreme-liquid-fertilizer-calcium-magnesium-iron-sulfur-1-gallon","provider":"Garden Canada","version":"1.0","type":"link"}