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njbiology

questions: american persimmon & multi-grafting technique idea!(?)

njbiology
15 years ago

Hi,

I have a bit of a dilemma relevant to some basic questions regarding American persimmons. I could use some expert advice. I have, on their way from John Brittain of Nollin River Nursery, a 'Morris Burton', 'Early Golden', 'Szukis', and 'Prok' (from starkbros).

I have a maximum square portion space of 30' by 30' to dedicate to growing a single American persimmon; (I'm using it in my native plant/native fruit plant yard nature-scape project that I'm going to eventually base a website encouraging native naturescaping and native fruits).

As I mentioned previously, I am considering putting all 4 varieties in a single hole, about 5" apart from one another in a box-shape formation, so that they might grow, expanding their trunks until they fuse to form a solid trunk: inosculation/approach grafting. Someone suggested to me that this may cause the trunk to rot and may not cause a true fusion, leaving 4 cores separate.

Since I haven't seen too many American persimmons in nature (all of which have been under 20' in height), can you tell me a little about pruning them and so on:

1. What is the advantage to pruning the height since (as long as grown in the open) the lowest branches will still be reachable?

2. In the north (i.e. NJ), generally, how wide do you think that an American persimmon grown in full sun on moist, well-drained soil would reach in 50 years time? I believe 30' wide and 50' tall.

3. If I planted the 4 trees separately spaced at 15' apart, instead of the above approach, could I easily prune them anually to be a life-long width of only 15'? If I did this, would this result in a disproportionately wide trunk and branches (as with some bonsai specimins) and weaken the tree through frustrating its natural growth inclination? I think restrictive pruning practices are determental to the lifespan of trees and shrubs.

3a. If I can prune each to 15' apart, since it will be a relatively small tree, I can probably consolidate and keep just one tree consisting of multiple varieties; although persimmons are not easy to maintain as a multi-graft project, if kept under 20', I don't see how I couldn't label each of the 4-varieties of main limbs and prune each so that no one dominates over the others; I could keep track of variety of each main branch and see to it that all new branches are kept in ballance. If I were to let the tree grow too large, of course, when the tree drops old branches, it would drop the initial set and may be replace by just 1, 2, (or 3) of the original 4.

4. What about this idea... I've never heard of it, but it seems like it could be a GREAT idea? which could apply to all fruit tree multi-grafting - no maintance required. What if you did a graft of a single variety unto a root stock and once that 1st variety forms an extended lead, graft a 2nd above it, and a 3rd, and 4th, and so on; in this way, as the sapling grows into a tree, the trunk will be formed of a sequence of 4 segments (varieties)?

Thanks,

Steve

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