Help Save My Avocado!
Hi everyone, about 9 months ago I transplanted three citrus and two avocado trees (the citrus are dwarf varieties, the avocados are a Hass and a Fuerte) from nursery pots into half-wine-barrel containers. I have -no- garden space to plant these, so it's container or nothing for the avocados, alas.
I used identical soil - a modified 5-1-1 - in all five containers. I modified it because I had a lot of good homemade compost to use, and for budget reasons couldn't fill 5 half-barrels with true 5-1-1. Actual soil is: 15% peat moss, 30% redwood bark (as close as I could get to fines, by screening), 23% screened compost, 12% play sand, and 20% perlite. I added some slow-release fertilizer and some dolomitic lime.
They are all watered via drip and have the same schedule and same volumes. The drip system was off for most of the winter. They all get the same amount of sun - as full as it gets on my property. I've inspected them carefully for insects (day and night), and can't find anything out of the ordinary.
From day one, the avocados appeared unhealthy, with leaf tips browning almost immediately, and leaves curling. I assumed I had over-fertilized and did a few heavy watering sessions and then let them dry out for a week, then resumed normal drip. The citrus (one of them included below) are amazingly healthy and growing like crazy. I left everything alone over the winter, but the avocados have not recovered, and are dropping leaves. New shoots appear and then brown off as well.
I have to assume it's root rot, even though the citrus are happy as clams in the same conditions. What are my options - is it too late to save the avocados? If I repot them, should I try to prune any damaged roots? How can I amend/improve the drainage of the soil enough to prevent the issue - ideally without buying an entire new batch of ingredients for mix?
Edit: I know I need to remove the stakes. I will be doing that this Spring, but I wanted to repot first if necessary.
Sick avocado #1:
Sick avocado #1 leaves:
Sick avocado #1 new growth:
Sick avocado #2:
Sick avocado #2 leaves:
Sick avocado #2 new growth:
This post was edited by keodark on Sun, Mar 3, 13 at 19:04