Growing well but just too large for this location – Umus ‘Jacqueline Hillier’

It’s no good. The ulmus must go. Ulmus ‘Jacqueline Hillier’ to be precise. I feel a little sad about this because it is a fine plant. I love it with its detailed bare tracery in winter. I love it with its fresh, bright green growth in spring and its lush summer appearance. I love its elegant and interesting form. It is a good plant in the wrong place.

It was I who planted it at the front of the rockery. At the time, we were still in full nursery production and it was one of the product lines. I see we described it at the time as reaching two metres by two metres, which I assume are the dimensions that were given to us when we first acquired it. That is why I thought it would be fine in the rockery where we could prune as required. It is now around four metres high and more than that in width of canopy and that is despite several major pruning efforts to restrict it over the past decade. The root system is extensive and suckers are popping up many metres away. It is just too big for where it is planted and is now so strong that it is increasingly difficult to grow anything beneath it and it is only a matter of time before the roots fracture the rockery structure.

It will require a chainsaw and we will get some firewood out of it but killing off the extensive root system is going to take poison, something we prefer to avoid.

Abies procera ‘Glauca’ – handsome but too close to the house

We are not unfamiliar with vegetative time bombs. We have a few, none more so than our very handsome Abies procera ‘Glauca’.

Oh look, here is a little photo taken earlier. Best guess is that it is early 1960s, when Felix planted it in the rockery. I am reassured that he, too, could plant without doing adequate research on ultimate size. Or maybe he thought it was a dwarf conifer at the time. At least he moved it out of the rockery while he could but it would have been helpful had he moved it more than 8 metres from the house. It is now over 20 metres tall, though not very wide, and we are psyching ourselves up for its removal. Should it fall (and it did have an issue with rot at its base, though that appears to have healed over time), it is likely to take out a good part of the house, starting with our bedroom. It is one of those major and expensive jobs that we know is coming up sooner, rather than later. Beautiful tree. Wrong location.

Spring growth on the left, 30 minutes trimming on the right

Some plants are more amenable to being kept in check. This little green maple (species long forgotten) is easy to keep at a controlled size. Once a year, I spend about half an hour trimming off all the long whippy growths and thinning the crown if needed and bob’s your uncle, an attractive vase-shaped plant. If I didn’t trim off the whippy growths, next year the new growth would be made at the tops of those so the plant would become considerably taller and more open over time.

A noxious weed: Commelina “Sleeping Beauty’ does not sleep

And as for vegetative time bombs that should be banned altogether, I give you Commelina coelstris ‘Sleeping Beauty’. I wrote about its bad habits five years ago and still it continues to reappear in the rockery, despite the fact that we are vigilant weeders and nowhere more so than in the rockery. It is worse than the weedy tradescantia.  Not only does it seed, but any piece of root left behind grows again. I nominate it for the banned list but one of our premier seed suppliers continues to sell this noxious weed. Shun it, is my advice.