I have a bunch of deciduous Larch trees growing in pots and they do the same thing every year. They start off very vigorously after I repot them into new soil and then as the season progresses the needles begin to yellow from the inside out and drop.
I'm pretty sure it's a deficiency in fertilizer but not positive because it's the same pattern every year. If I let them continue to yellow it will sometimes kill some of them. I have been separating them in order to arrest possible disease but I don't know if that't the issue or not.
These trees are very, very vigorous and I think they need additional feritilization and of the acid variety.
If anyone has any knowledge about them that would help here I'd appreciate it.
It starts in the lower branches, mostly on the inner part of the tree but works it's
way outward and up the tree over time. All needles affected fall and if I let it go it
could and has killed trees.
It does not seem to happen to single trees but when I have a group planted together
it's almost inevitable that it will occur.
We have had a really wet Spring and early Summer and the Larches were all doing great
but with a short dry spell (during which I watered) the brown needles started showing up.
I think that it's just a coincidence that it happened then because it seems to happen at this
time every Summer regardless. Thought it might be dry soil as mentioned above or lack
of nutrients because these trees are very, very vigorous, so I fed them to try to check it.
But to no avail. They continue to brown.
Meanwhile I have a single specimen in a separate pot that shows no signs of browning.
Suggestions or possible fixes???
way outward and up the tree over time. All needles affected fall and if I let it go it
could and has killed trees.
It does not seem to happen to single trees but when I have a group planted together
it's almost inevitable that it will occur.
We have had a really wet Spring and early Summer and the Larches were all doing great
but with a short dry spell (during which I watered) the brown needles started showing up.
I think that it's just a coincidence that it happened then because it seems to happen at this
time every Summer regardless. Thought it might be dry soil as mentioned above or lack
of nutrients because these trees are very, very vigorous, so I fed them to try to check it.
But to no avail. They continue to brown.
Meanwhile I have a single specimen in a separate pot that shows no signs of browning.
Suggestions or possible fixes???
It's hot and humid here with lots of rain. No dust at all. I am
trying to keep them moist and fed them last week. Don't like to feed
in the heat but they had grown so fast in the Spring I thought the yellowing
might be due to malnurishment.
Lots of needles on the soil. I'm cleaning it up and keeping the moisture
level high. Don't know what else to do.
trying to keep them moist and fed them last week. Don't like to feed
in the heat but they had grown so fast in the Spring I thought the yellowing
might be due to malnurishment.
Lots of needles on the soil. I'm cleaning it up and keeping the moisture
level high. Don't know what else to do.