environmental limits on Calathea
Quick answer
If your Calathea has environmental limits, the most likely cause is: Calathea species such as C. insignis and C. makoyana are obligate shade plants with low light saturation points and maximal photosynthetic rates. High light intensity or direct solar exposure causes rapid chlorophyll breakdown (photodamage), manifesting as faded leaf sectors or 'sunburn' spots. This is often exacerbated by low humidity which reduces the plant's ability to cool itself via transpiration. PMID: 29494547.
Start here:
- 1. 1. Move the plant to a location with lower light intensity (e.g., 3-5 feet from a window).
- 2. 2. Do not remove faded leaves if they are still firm, as they continue to photosynthesize at lower rates.
Why Calathea gets environmental limits
Goeppertia spp.
Calathea species such as C. insignis and C. makoyana are obligate shade plants with low light saturation points and maximal photosynthetic rates. High light intensity or direct solar exposure causes rapid chlorophyll breakdown (photodamage), manifesting as faded leaf sectors or 'sunburn' spots. This is often exacerbated by low humidity which reduces the plant's ability to cool itself via transpiration. PMID: 29494547.
How to reverse environmental limits on Calathea
- 1
1. Move the plant to a location with lower light intensity (e.g., 3-5 feet from a window).
- 2
2. Do not remove faded leaves if they are still firm, as they continue to photosynthesize at lower rates.
- 3
3. Stabilize humidity to assist the plant's natural cooling mechanisms.
Keep environmental limits off this Calathea
Place Calatheas in bright indirect light (ideal 1000-2000 lux). Avoid direct sunlight, especially in south or west-facing windows. Use light-filtering curtains if necessary.