Some of the fronds on the purple fountain grass are losing those soft, tiny spikes. I live in central texas, weather is about 80-90 degrees right now. Plant is in full sun. Why do those spikes fall off? Is there a disease?
Purple Fountain Grass
Certified GKH Gardening Expert
This is normal at the beginning of fall, as these plants get ready to be cut down. As they start to fall apart you may cut the stalks back. Here is an article for more information: https://www.gardeningknowhow.com/ornamental/foliage/purple-fountain-grass/grow-purple-fountain-grass.htm