Common Disease Problems
Bacterial Leaf Spot: First signs are small translucent spots with a broad yellowish edge that slowly enlarge and become angular or irregularly circular with a reddish center. It thrives in cooler temperatures. The disease may also affect and disfigure flower heads. Burpee Recommends: Remove infected plants. Avoid overhead watering. Do not work around plants when they are wet.
Crown and Root Rots: A number of pathogens cause root rots of seedlings as well as mature roots. This can come from being planted too deeply, or poor drainage. Burpee Recommends: Pull up and discard infected plants. Make sure your soil has excellent drainage. Contact your Cooperative Extension Service for recommendations.
Common Pest and Cultural Problems
Leaf Scorch: Hakonechloa can develop scorched foliage when it is planted in full sun. Burpee Recommends: Plant in part to full shade.
Rabbits: Chew on plant leaves, particularly the new growth. Burpee Recommends: Use a hot pepper wax spray or rabbit repellent.
Spider Mites: These tiny spider-like pests are about the size of a grain of pepper. They may be red, black, brown or yellow. They suck on the plant juices removing chlorophyll and injecting toxins which cause white dots on the foliage. There is often webbing visible on the plant. They cause the foliage to turn yellow and become dry and stippled. They multiply quickly and thrive in dry conditions. Burpee Recommends: Spider mites may be controlled with a forceful spray every other day. Try hot pepper wax or insecticidal soap. Check with your Cooperative Extension Service for miticide recommendations.
Do I need to divide my hakonechloa? The plant spreads slowly so you should not need to divide it for many years. You can divide it in spring or fall.
Can I grow hakonechloa in containers? Yes, it’s great for containers.
Is hakonechloa deer resistant? Yes it is deer resistant.
Is hakonechloa native to the USA? No it is native to Japan.
What are good companion plants for hakonechloa? Hostas, heucheras and Japanese anemone are great companions for hakonechloa.