Hi,
I looked at a pollard hornbeam earlier. It's in a private garden by an old millhouse (apparently hornbeams were often found by millhouses as the wood was used for making bits for wheels, cogs and all that). I think it's coming onto qualifying for veteran status with a stem diameter of 102cm (girth 302cm). Approximate height of 16m. Furthest crown-spread of 30m.
The person who I looked at it with said that when he visited it in the autumn that it was riddled with honey fungus fruiting bodies and indeed there is much decay to the sapwood. The crown is fairly chipper to be honest although there was minor localised deadwood presumably relating to the dysfunctional sapwood on the stem. While it is a dense crown there aren't many hugely significant poor unions that were jumping out at me. The rooting area is partly surfaced as an access track which I obviously doesn't do it any favours. Approximately 70% of the rooting area is lawned.
There is a permanent target of the millhouse on one side and the rest would be intermittent access and sporadic dwelltimes.
My thoughts are to work on improving the rooting area as a priority. As shown in the "to mulch or not to mulch" thread, I'm think that a layer of cardboard across as wide an area as the customer will tolerate, mulched with hardwood chip (preferable hornbeam, more likely beech/oak chip) and collect and bung a few handfuls of earthworms on.
Branch removal will be minor, focusing on those that bend downwards or which are exposed/proud from the main crown outline. While it has certainly lapsed as a pollard, it really doesn't look as though there are any stems that are about to fail. The chance of failure will certainly increase in the future so should we deal with this now? There isn't a lower crown to speak of and there doesn't appear to be many suitable points to prune back to on the long stems. Would taking off a metre all over perhaps stimulate dormant buds lower down in the crown to grow, allowing a secondary crown to develop so that 5 years down the line a second reduction could be carried out? I'm very conscious that removing any of the photosynthetic area will affect how the tree deals with the honey fungus. The buds are starting to swell right now so I think we've missed the boat to carry out works for the while, but with the relatively small amount of foliage that we're thinking of removing, late summer feels like the right time to do any cutting.
Here are some really vague photos, does anyone have any thoughts?