Help! Re-Occurring Chlorosis!

[ML85]

'd overfertilized my plants several months ago. Overfertilizing symptoms didn't show up until later. The symptoms are primarily leaves yeyellowing/dying and stunted growth. It's the distinct "Yellow of Death".I leached the plants. Most responded well to it. Others were a very different story. They appeared to really improve and chlorosis hit again, despite the plants not being fertilized. I'd leach again and change the plants' soil. It'd occur again and I'd leach again.The question becomes is this due to overfertilizing or nitrogen deficiency? I can see fertilizer/mineral deposits on the pot and the soil has a quite a bit of salt deposits. There's no mineral crust over the soil. My wife brought up a good point by pointing out that the grow lights are on for much of the day when the plants are supposed to be dormant. I'd foolishly set up the light timings to those used in a certain plant.


A banana plant is also experiencing this. It goes through the same cycle. I will note that once a plant has been leached they grow in a way that's almost steroidal, likely due to the grow lights.

Leaching is a given. This said, I wish to avoid root rot. Would using a high potassium root supplement in their next watering mitigate this risk?

My columnar basil is in rough shape. It definitely has damage due to too much light and spider mites, but it's become quite stripped very quickly.I'm not a plant butcher! There was a time when I was quite adept with houseplants. Working 12 hour shifts has changed this!


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[Marck]

Greetings, welcome to the Forums.

Whatever imbalances occurred previously, you must now bring your plants to a new equilibrium.

A plant can't tell the difference between leaching and overwatering, be sure that any excessive irrigation does not lead to saturated soil or poor drainage conditions.

Regardless of any past over-fertilization, leaching could also lead to nutrient deficiency. Going forward try to neither over- nor under-fertilize your plants. Without analysis, its hard to say exactly what are in the various crusty deposits that often form on clay pots, but as they are commonly seen on pots containing healthy plants I wouldn't immediately assume it is anything toxic.

Though some claim success with long light exposures, many others suggest giving plants grown with artificial light, a dark 'night' period.

 

[ML85]

I'm going to take some soil samples and test their N-P-K saturations. This is something that should've been done from the onset!

I'll post the results. I just want my plants to flourish. Having a ton of houseplants has always been a way of decorating my living space, but they bring serenity to it.