Troubleshooting
Tall Moor Grass problems — and how to fix them
Tall Moor Grass (Molinia caerulea subsp. arundinacea 'Transparent') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Stem lodging in wind
Very tall flower stems can splay or lodge in exposed, windy sites, especially if the soil is fertile and growth is lush. Site in a sheltered spot or stake informally with pea sticks. Avoid high-nitrogen feeds.
Slow establishment
Like all Molinia, 'Transparent' is slow to bulk up. In its first season it may look sparse. Do not attempt to accelerate growth with heavy feeding. Full effect is typically seen in years 2–3.
Alkaline soil failure
Plants on alkaline or chalky soils develop chlorotic (yellow) foliage and fail to thrive. Acidify soil before planting or grow in large containers of lime-free, humus-rich compost.
Prevent tall moor grass problems before they start
Most tall moor grass issues are care-mismatch, not bad luck. Dial in the basics:
Looking for tall moor grass in general rather than its problems? Read the full tall moor grass care guide — light, water, soil and feeding.
Tall Moor Grass problems — FAQ
Why is my tall moor grass stem lodging in wind?
Very tall flower stems can splay or lodge in exposed, windy sites, especially if the soil is fertile and growth is lush. Site in a sheltered spot or stake informally with pea sticks. Avoid high-nitrogen feeds.
Why is my tall moor grass slow establishment?
Like all Molinia, 'Transparent' is slow to bulk up. In its first season it may look sparse. Do not attempt to accelerate growth with heavy feeding. Full effect is typically seen in years 2–3.
Why is my tall moor grass alkaline soil failure?
Plants on alkaline or chalky soils develop chlorotic (yellow) foliage and fail to thrive. Acidify soil before planting or grow in large containers of lime-free, humus-rich compost.