Hello, Midas. Any idea of what is special on that side? Normally, this time of the year, you get problems due to lack of moisture or too much moisture.
But to get such a problem, one would have to affect the amount of water that the
plant is getting on that side. Is there a sprinkler head nearby that could cause too muchg water to accumulate? Is there something that would block water from a nearby sprinkler head so that this area gets no water?
If the problem is too much water on that side, the roots could have developed a fungal infection (root rot) and your
plant may or may not recover. It would depend on the
plant and the extent of the damage.
How old is this
plant? Do you know the variety? Are you maintaining the soil moist? Or is it wet? Is it planted in a pot? Do you have mulch around the base of the
plant? Was it root bound when you planted it? Could the roots in that area have been injured somehow?
The opposite problem can also kill the
plant. If you water too little on that side then the roots and sections of the
plant would die. However, if this was the case, you would have noticed wilting of the leaves first.
To tell if the
plant is getting too much or too little water, I suggest you monitor the soil moisture for the next week daily with a moisture meter or by inserting a finger to a depth of 2-3 inches.
If the soil feels dry often then the
plant needs more water. If the soil feels wet then the
plant has too much water; determine why and take appropriate action. Depending on the amount of damage that has already happened, the
plant may or may not recover. All you can do is baby it and keep an eye for any other symptoms.
Since the
plant is under stress, do not think of feeding it any chemical fertilizers. An organic product like Liquid Seaweed would be the most I would recommend if your soil lacks nutrients.
Good luck,
Luis