Avocados breed true from seed and are usually propagated as such. Though anything can be grafted and if soil conditions are right the rootstock seed coat may not have broken down in a nursery pot. I'd ask the nursery since that knuckle might be a graft point and it would be interesting to know what they are using for rootstock if grafted and why (what their thinking is for doing it that way; quicker fruiting, better disease resistance, salt or drought tolerance?), but would enjoy your tree either way as it will be true to cultivar. Hopefully you have a suitable pollinator nearby.

Just cut that branch off and make a V-cleft graft in it. The best would be with a scion wrapped in parafilm or buddingtape so the scion can sprout through the tape. You can also cut the stem of the tree off and graft onto the sprouts. Leave the tape on untill the scion has a few set of leaves and then slowly cut it off. Avocado is not that hard to graft.

Yeah that's the thing, the soil was free draining and was potted in basically sand but still had root rot. LIke I said, I don't know if I somehow transferred it to the Avos or I got 1 bad Avo from Atkins and transferred it that way. I don't think both were infested. Yeah, with decomposed granite, it's pretty much hard to kill anything as water drips right off. However, if you get root rot, you'll be sure no matter how free flowing it is, it'll start to chew up your roots. Agri-fos doesn't eradicate root rot just makes the roots less susceptible w/ stronger defenses. If your soil is contaminated or was contaminated, Agri-fos will help your Avos recover but remember when you stop using it 2 or 3 years, you'll be back in the same position as you were before Agri-fos. Phytophthora cinnamomi can be dormant for 7 years, survives at different oxygenated soil levels, ranges of temperatures and can actually move in water (with a tail!). Rather than deal with that again and waste more money, I'm just getting a commercial rootstock plus I'll make sure I'm giving it it agri-fos once twice a year for good measure. Let me know if you guys want any variety on a certain rootstock as I'll be getting my shipment late July. It'll be expensive but worth it (at least for me). I was thinking maybe I should start selling avocados w/ resistant rootstock in orange county if there was enough demand but I don't think there is.

junk4us the reed is doing well and is holding onto 5 fruit for next year. I was a bit worried about frost so I haven't planted it into the ground yet even though I have had it for a year already. As it is, I can wheel it into the garage if needed. I have a zutano in the ground that is growing like a weed. I was originally planning to use it as a root to try to multi graft and grow jan boyce, reed, nabel - but the fruit was surprisingly tasty so I am hesitating to cut.