Bloom CityProfessional Grade Ultra Pure Cal-Mag Growing Fertilizer, Quart (32 oz)

Took a long time to get but I didn’t knock off points from my review for it because this stuff is so powerful. Use it sparingly for certain species. I always half or quarter the doses suggested on the bottle.

Nice Stuff. Great plant 🪴 CALMAG

This is the only general micronutrient supplement I ever buy. I first got it when my younger plants started showing signs of nutrient deficiencies outside of NPK nutrients. My plants showed signs of recovery after one watering and a few foliar applications. Some people might not need it, especially if they are growing in properly enriched soil, but I have water that's softened at a municipal level. As a result, some minerals have been removed from my water; this product helps restore those and add others that are good for all plant growth stages, from new plants to blooming plants.Use is simple. Just measure out however much I want to add to my 2-gallon can, dump it in, add water, and water my plants as usual. No worrying about presoaking anything or lots of stirring to mix in powders. (for simplicity, I use a different fertilizer bottle's cap to measure out ~8ml when filling my watering can)The bottle cap/lid and recommended measurements have changed from the previous bottle I bought. The ingredients list is the same, as well as the concentration percentages of the minerals. They also separate the use guidelines/directions differently between them. I'll only mention the amount differences.New:watering can: 1tsp (2.5-5ml)/gallonHose end sprayer: 1tsp (5ml) approx 1:750 ratioFoliar spray: 2-4tsp (10-20ml)/gallonOld:Grow phase: 2-4ml/gallonBloom phase: 3-5ml/gallonSprayer instructions: 20-40ml/gallonNot sure why they changed the amounts, but it's helpful to know the ratio for using with a hose end sprayer.Overall, great value for money in my opinion.

I grew about 10 tomatoes outdoors in 10 or 15 gallon fabric pots this year. I used a calcium rich fertilizer when I started the plants because I knew that nutrients wash away in pots and aren't replenished and calcium loss can cause blossom end rot. I have had it before. The foliage looked good but when they set fruit, almost all except cherry tomatoes showed end rot, some fairly serious. I assume the fertilizer wasn't concentrated enough or washed away to quickly, I bought the cal mag supplement, mixed it 15-20ml to a gallon water and sprayed it on the entire plants in the evening. I live in a hot dry location and was worried about burning the plants so tested it on one plant first. When it didn't burn that one I did the rest. I continued treat the plants, sparying in the evening, about once a week. The end rot did go away, I can't actually confirm the product did it. We had gone through a very hot spell well into the 90s most days and with 20% humidity when I first noticed the problem. The weather let up a bit at the same time I stopped seeing the end rot. I might have changed the watering a bit too. It's possible it would have gone away on it's own. But I continue to spay once a week, it hasn't come back, and we have had some hot days since. So it didn't hurt the plants and maybe it helped.

Great stuff. Contains equal part nitrogen.

I use it on my indoor coffee trees when they get a little chlorotic. Also great for the tomato plants and staving off blossom end rot.

Good product for plants

I've used frequently almost daily. Best year I've had avoiding blossom rot on tomatoes. I'll be using it from now on.