|Last year, I grew a 3rd year peony that flowered on strong stalks and over 80% of the rhizome bloomed. The part that didn't turned black on the heads and never opened up. This year, it is already showing it's heads and I wanted to make sure the whole thing bloomed, should I spray some type of fungal protection on it to keep the disease away? Thanks, you guys are great!|
|You're right - a preventative spray will keep your peonies from developing fungal infections. Use a copper based fungicide such as Bonide Liquid Copper Concentrate,
Natural Guard Copper Soap Fungicide Concentrate, Camelot Fungicide/Bactericide Concentrate, Concern Copper Soap Fungicide, or Hi-Yield Copper Fungicide Concentrate. Apply according to label directions and repeat sprays if recommended on the product label. Hope your peonies are their absolute best this year. Enjoy!