EspomaOrganic Iron-Tone 3-0-3 Organic Fertilizer and Plant Food to Help Correct Iron Deficiency (Chlorosis). 5 lb. Bag. Turns Yellow to Green, Non Staining Iron

Espoma makes the best product on the market. Though this didn't seem to be what my hydrangeas needed. Just the same, the product speaks for itself thus the 5 star.

This stuff is amazing! I sprinkled it around my gardenia bed, and in two days, the yellow leaves were a waxy deep green and the following week, my buds stopped falling off but rather blooming spectacular white fragrant flowers!!

Works well. Restored yellowing leaves to green

Had a crape myrtle that was showing iron deficiency symptoms. I wish it came in a smaller size since I didn't need this much.

I had several plants, both planted and potted, that needed an iron boost because they had become chlorotic. Yellow leaves or sickly looking green ones are a giveaway I don’t ignore, and this product brought results in my hydrangeas and hibiscus. It doesn’t happen overnight, so be patient, and repeat the recommended amount if needed. Recommended!

Our three year old dogwood in NC is so stressed by this summers heat and drought. The leaves were yellowing but two others were doing okay. We got the Iron-Tone and followed directions and in two weeks its a happy tree once again! Great stuff!

Very good product. The yellow leaves of my rose plant turn to healthy green leaves again after 2 weeks. Thank you!

This was recommended by an online expert. I used it on my plant with yellowing leaves and it helped them turn green again.