Humboldts SecretCalMag & Iron | Calcium, Magnesium & Chelated Iron Nutrient Fertilizer | Hydroponic Supplies for Vegetative & Flowering Growth in Soil, Coco, Hydroponics or RO Water | 128 Ounce

Would love to continue using this product it's just too expensive I rather try to do a home remedy putting together fertilizer to my soil to be rich then use this product later on down the line when the nutrition runs out the soil very good love it it spoke my plants up the leaves were blown in the wind I wish you had more nutritional stuff

I bought this because my mother's tomato plants and mine had tomato blossom end rot for the first time. After just 2 applications our plants started producing rot free tomatoes. Worked great!

Size was great lasts long time but works quickly. Easy to usedursble seal was great promoted growth no smell

Works well for introducing elements to raw coco fiber. Rinse non Soil Medium with this micronutrient to avoid uptake issues for cannabis. Note that it is 2-0-0 versus standard calmag of 1-0-0Use sparingly

I only buy this stuff, we get a good amount for a great price, I have never been let down by and neither have my plants

This product did miracles for my bell peppers and tomatoes. They grew like wild fire and it reduced the number of bell peppers from getting rot spots significantly. I will buy it again.

2023 has been a brutal year for my garden. The rains of winter gave rise to swarms of insatiable insects, some of which I had never seen before. Then, we had record temps that turned many of my plants into crispy critters no matter how much I watered them.The few tomato plants that didn't wilt into oblivion then developed BLOSSOM END ROT! Knowing that BER is often caused by a lack of calcium, I ordered this product. Unlike traditional garden Epsom salt, this Humboldt formulation also includes magnesium, which helps the plant absorb more calcium, along with iron. I gave it to my tomatoes and within a week, blossom end rot stop being a thing. I also used it on my "other" types of plants that are legal in many places. They LOVED it! I am now trying on my trees and hoping Humboldt's Secret will help them endure what I hope are the last few days of scorching temps.

I had a question & called the numer on the bottle. A voice mail comes on sending you to the email. The email I sent came back to me as undeliverable. Would've been nice to have my questions answered. I didn't notice much of a difference when I used it on my lawn.