What's going on with the yellowing leaves of the Chinese roses?
Here's an explanation from the "Tips for Daily Life" series regarding the yellowing of Chinese rose leaves in the green plant and flower category, details are as follows:
Last morning, a rose enthusiast sent me a message, saying that the newly planted Chinese roses looked abnormal, the leaves were yellowing, and the leaf tips were withered, and they sent me photos.
What's going on with the yellowing leaves of Chinese roses? A trick to reverse the situation.
From the pictures, the leaves of this Chinese rose plant appear to be slightly discolored and yellowing, with a bit of a burnt edge, and it seems that the potting soil is quite moist.
So, I asked the enthusiast about their daily maintenance routine, such as how often they water the plant and where they place it.
The enthusiast said they put the Chinese roses on the balcony where there is good ventilation, and they don't water it often. They watered it once on September 29th and haven't watered it since October 17th.
But from the pictures, the potting soil looks moist, so I confirmed with the enthusiast whether the soil is actually wet, and they said the soil is moist.
Now, here's the problem!
What's going on with the yellowing leaves of Chinese roses?
How often do you water your potted Chinese roses?
Although different potting soils will require different watering frequencies, generally, if the surface of the potting soil is still very moist 20 days after watering, it indicates that your soil is not breathable enough.
So, Green Plant Enthusiast Network continued to ask the enthusiast about their potting soil mixture.
The enthusiast's mixture is as follows:
Coco brick: Gardening soil: Peat soil: Perlite in a ratio of 3:2:1
There is a missing number in the ratio the enthusiast provided, but from this ratio, you can get an idea of the water retention of this mixture.
Actually, the Green Plant Enthusiast Network has advised multiple times before to use less coconut brick soil because it really retains too much water.
This enthusiast used gardening soil, which intuition tells me is a general-purpose nutrient-rich soil, which often has very poor breathability, and many enthusiasts have learned this the hard way. The Green Plant Enthusiast Network has reminded everyone about this multiple times.
Now, regarding the peat soil and perlite, there's nothing wrong with these two substrates, but the ratio isn't right.
Chinese roses dislike waterlogging, so the potting soil should be as loose and breathable as possible. No matter what substrates you use for mixing, the Green Plant Enthusiast Network suggests that particle matter should account for about 1/3, as its main function is to increase breathability.