These are growing in Olympia, WA, climate zone 8a.

This is Dunstan Citrumelo. The tree is now just a little bit taller than my height. I do not cover the tree or give it any special protection. Most years it manages to keep all its leaves through the winter.

The main trunk is 3/4ths of an inch thick, and the tree is full of very big long spikes (the type that could easily pop a tire, but probably they help to prevent the deer from feeding on the tree).

Most of the leaves are trifoliate in shape, but there are some regular shaped citrus leaves on the tree.

(Dunstan citrumelo resulted from a cross between white 'Duncan' grapefruit and Poncrius trifoliata)

However, now that the tree was reached such a height, I am worried that the top of the tree may be less protected, since it is rising so far up away from the ground and up out of surrounding bushes, so it's possible an unusually cold winter may come along and kill the top of the tree.

Dunstan citrumelo fruits are not supposed to taste very good although they are somewhat edible, sour and "lemon"-like, with only a relatively mild bad poncirus-like taste. Although I personally have not had the opportunity to taste the fruits of this variety.

I also have a Changsha mandarin that is growing nearby, in a protected spot on the south-facing side of the house. It's growing right up against a big bush that is almost surrounding it and probably helping to provide protection during the winter, although it has now grown above the bush. The Changsha mandarin is doing very good, just a little over 5 feet tall, with very healthy looking leaves that recovered well from the winter. (It is not "deciduous")

Still no fruits on any of these yet.

(I have tasted a Changsha fruit picked off a tree only a little bigger than mine growing in someone's backyard in Vancouver, WA. It seems to be a low quality tasting mandarin orange, but almost as good as the worst fruits you might find in a supermarket. The peel is definitely completely inedible, unlike Yuzu. The inside is just a little bit dry, a little insipid, and filled with many large sized seeds. There is a little bit of an aroma that is reminiscent of hops or cannabis, but the inside definitely is edible. Just not really good tasting. If I had to compare it to a family of mandarin oranges, I would say it is most similar to a Clementine type)

This is a little "Ichang lemon" plant I have growing outside.

It was not covered this winter, but is growing in a more protected location, up against the wall of the house.

I am pleasantly surprised it has been surviving and appears to be doing as well as it has. I do not think Ichang lemon is really very cold hardy, but surprisingly this plant has been growing acceptably well here. But it is in a very optimal spot, protected from wind. This plant has survived outside through two winters, and the winter before that it survived outside in a container. I do not think it is very cold tolerant but it seems to be able to recover from damage well. But it does not really put on growth until temperatures become very warm. Ichang lemon is probably not a hardy citrus variety that should be recommended for this climate, and it probably will not be able to survive for you, but I am just amazed that I am able to get it to grow here, this far north.

("Ichang lemon" is tentatively classified as "Citrus x wilsonii", and should not be confused with Ichang papeda. Several years ago I had tried planting two small Ichang papeda plants but they were unable to survive outside here)

(both pictures were taken late April 2025)