Is my setup going to produce fruit?, serge, 29. May 2013 10:00
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This is such a great resource, but I have to admit it goes over my head quite a bit.

I live in Alameda, CA (10a) and last August planted 3 avocado trees (each about five feet tall, maybe 2 or 3 years old?).

Lamb Haas, Sir Prize Haas, Pinkerton, planted in a row in that order.

For six months the leaves had brown tips which moved up the leaf and dried it out. I think they've finally adjusted as the leaves look pretty good now. The trees made some flowers but I don't think any fruit is on the way. Maybe next year?

Anyway, I have a ton of questions and they are probably pretty easy. I did some searching but didn't find exact answers so if anyone could help that would be great.

1. I was told by the seller to bury a 4" perforated irrigation pipe next to the root ball for each tree, which I did, and to water down that pipe. Everything I read says water at the drip line. Should I continue using the pipe or switch to the drip line?

2. If I can continue using the pipe, should I also fertilize down there, or should I spread it around the drip line and start watering from the top?

3. Are those 3 varieties going to help each other make fruit, or did I make a mistake in selection? If I made a mistake is there some other variety I can plant that might help out?

4. I am using municipal water right now but have a well which makes about 1600 gallons a day. I checked the water for EC and it was pretty low, considered to be in the 'good' range for avocado growing. Is there any specific test or set of tests I should do to the water to make sure it's OK? It's been fine for growing vegetables and citrus *so far*.

5. I have not yet fertilized the trees but have Gro-Power premium citrus and avocado that I am using on my citrus. Here is that info: "GRO-POWER Premium Citrus & Avocado Food 8-6-8
Ideal for all citrus, avocado, fruit and nut trees, as well as grape and berry vines. 40% Humus, 8% Humic Acids, Controlled Release Nitrogen, 4% Magnesium, 4% Sulfur, 2% Iron, micronutrients and soil penetrant." Will this be good for the trees?

The trees are growing new leaves not gaining much height. They look healthy with the exception of the Pinkerton, which developed TONS of flowers and dropped 4/5 of its leaves. New leaves are coming in and they look good so I don't think it's in too much trouble. The two Haas trees looks great.

Any help or comments? THANK YOU SO MUCH!

Every person I know has killed their avocado trees and I don't want to suffer the same fate!
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Re: Is my setup going to produce fruit?, Greg Alder, 1. Jun 2013 08:02
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I would switch from that irrigation pipe to something more on the surface around the drip line. By now the roots on those trees should've explored beyond their root ball they were confined to in the original pot. You want to encourage that by watering in a larger diameter.

I wouldn't bother with fertilizer. Just keep some mulch over the soil surface and keep the trees watered. Fertilizer is unlikely to help the trees do anything at this point and may lead to more tip burn like last year. I once fertilized a tree too heavily with fertilizer that was too salty and it did much more harm than good.

Don't expect fruit for another year or two. I also have a year-old Pinkerton that flowered profusely this year but didn't set any fruit. Avocado trees (grafted) don't set much fruit in their first couple years.

But I think your combination of Lamb Hass, Sir Prize, and Pinkerton is good. Sir Prize has a "B" flowering schedule and therefore should help in the pollination of the other trees, which are "A" type.
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Re: Is my setup going to produce fruit?, Greg Alder, 1. Jun 2013 08:05
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To be clear: I meant to say that I once fertilized a YOUNG tree too heavily and the tree responded with no fruit set and lots of tip burn.
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Re: Is my setup going to produce fruit?, serge, 2. Jun 2013 20:11
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Thank you so much for the in put - I'll stay the course.
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Re: Is my setup going to produce fruit?, Reuben Hofshi, 21. Aug 2013 09:31
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Hi Serge, when you state "but I have to admit it goes over my head quite a bit" are you referring to the website or the forum?
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