I acquired this broadleaf (Pyracantha coccinea - 10 years) about 2 weeks ago. Today I noticed that some leaves have turned yellow in the last 24-48 hours. Is this normal? What should I do in this situation to identify the root cause? Any tips are welcome. Thank you so much.
Hi Pedro, first of all it doesn’t look bad at first sight (new growth is very green and the yellowing is more on older leaves), but I understand that you want to know what causes this. How have you been watering the tree and what surroundings was it in before you bought it and where do you have the tree now? A change in climate could make it shed some older leaves.
Thanks for the reply. Good questions. I didn’t water it on Sunday and yesterday as I was out of town.
IIRC the tree was in a shadier spot previously. Now, it’s in a place that gets more sun the entire day. I can move it to a different place to see if it helps. What do you think?
Maina via Mirai Forum <notifications@bonsaimirai.discoursemail.com> escreveu em ter., 6/05/2025 às 23:02 :
How is the water uptake of the subtrate? Does it easily go into the soil or flow over? Having pyracantha in the sun is the right place for it.
For now I’d say the tree is fine. If the yellowing worsens there might be a substrate or root problem, but the new growth looks good. If you water regularly you should be fine. And repot next spring.
Also see this discussion: Pyracantha Health Identification