Troubleshooting
Ludwigia repens problems — and how to fix them
Ludwigia repens (Ludwigia repens) 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.
Stays green instead of red
Red colour is driven by high light, lean nitrate and good iron. Increase PAR and iron dosing; under modest light it grows healthy but olive-green.
Lower-leaf drop
Shading from a dense canopy or low nutrients strips lower leaves. Thin the top, raise light, and add root tabs in inert substrate.
Melting on emersed-to-submerged transition
Nursery-grown emersed stems often shed leaves underwater. Keep parameters stable; new submerged growth follows within a couple of weeks.
Copper sensitivity for tankmate shrimp
Not a plant problem but a tank one: copper-bearing fertilisers used to colour Ludwigia can harm shrimp. Use shrimp-safe dosing if keeping invertebrates.
Prevent ludwigia repens problems before they start
Most ludwigia repens issues are care-mismatch, not bad luck. Dial in the basics:
Looking for ludwigia repens in general rather than its problems? Read the full ludwigia repens care guide — light, water, soil and feeding.
Ludwigia repens problems — FAQ
Why is my ludwigia repens stays green instead of red?
Red colour is driven by high light, lean nitrate and good iron. Increase PAR and iron dosing; under modest light it grows healthy but olive-green.
Why is my ludwigia repens lower-leaf drop?
Shading from a dense canopy or low nutrients strips lower leaves. Thin the top, raise light, and add root tabs in inert substrate.
Why is my ludwigia repens melting on emersed-to-submerged transition?
Nursery-grown emersed stems often shed leaves underwater. Keep parameters stable; new submerged growth follows within a couple of weeks.
Why is my ludwigia repens copper sensitivity for tankmate shrimp?
Not a plant problem but a tank one: copper-bearing fertilisers used to colour Ludwigia can harm shrimp. Use shrimp-safe dosing if keeping invertebrates.