While that is one solution to the problem of cold winter temperatures, another one is selecting varieties that have a much lower temperature threshold where the fruitlets get damaged. For example, the large tree in the International District here in Seattle had already flowered before the freeze (upper teens) this last December, yet when I visited in mid-January it was still holding the fruitlets, and @Bradybb reported this summer that it had ripened nicely.
Two of the three seedlings of that tree that are in my yard suffered minor leaf damage in the same freeze, but one of them did not, and is still holding all of its leaves from last year. I would think using the International District tree as a source of breeding material for our climate would be a great idea!
@murky, I posted several photos. Over a dozen varieties budding out now – including ones in complete shade.
@swincher, I am growing a grafted tree from the Chinatown tree as well. It has had flower buds for atleast 3 years now.
Couple of observations – when all my other loquat flower buds froze out last year, so did the Chinatown tree.
The China town tree is large. Parts of the tree that are exposed to full sun flower earlier. These are exactly the same flower buds that get destroyed by cold freeze. You can observe which were open flowers in December and notice which ones are producing fruit in April. They are not the same.
The flower buds that are protected under the canopy are the only ones that go on to make fruit. Every exposed flower bud gets frozen out. I have observed this on this and other fruiting loquat trees in the PNW over many years.
The other good thing for this tree is that there is a building right under it (restaurant?) That generates a lot of heat and creates a micro climate. I noticed this too at Bullock brothers property in Orcas where they have a couple of reliable fruiting loquats. Both of them were large and overhanging buildings that were creating a micro climate.
There is a smaller tree in the same compound as the giant chinatown tree. That rarely appears to produce any fruit.
It is good to use the chinatown tree as breeding material if you think it makes sense. But loquats in general have near zero problems surviving our temperatures. Getting fruit from a small tree is the real challenge.
This is fun! I have a 3 year old gold nugget seedling, zone 9b extreme norcal coast, ( fog belt) protected (ish) by a phylon wall in a 25 gallon pot that is thriving. I was told fruiting was highly unlikely in my region but i like a challenge! Im excited to watch your progress and encouraged to give mine more time to grow to be more than just a pretty oddity.
Good to know! I didn’t realize you’d grafted that variety and compared it to other varieties. I was just impressed that the fruitlets I saw in January (near the edge of the lower part of the canopy) looked healthy after those mid-teens temperatures, even with the microclimate there that seemed surprising to me. But maybe I’m just not giving enough weight to the microclimate effects!
Here are some photos of that tree that I’ve posted in another thread for anyone curious what we’re talking about:
It seems like the coldest part of winter always comes towards the end where I’m at. Is this generally the case throughout the PNW or just where I am? I’m wondering if late flowering will be enough in my location. “Day-neutral” traits with sporadic bloom through the year would seem very ideal.
I have mine growing in a semi-covered enclosure. They are growing great …but I had some tip-burn this summer (!). I might have to cover with shade cloth for the occasional 85-90 degree days. All this for a piece of fruit - I am definitely nuts!
I haven’t seen any sign of heat stress or sunburn in mine as long as I keep them thoroughly watered during hot weather. Even last summer with the 100+ heat wave, they drooped but perked up when I drenched them, and no signs of lingering damage. One of mine is in direct sun near a concrete wall with windows that reflects heat and light onto the tree.
Mine were completely fried in the blast furnace 110+ temps we got in June 2020.
The fruit were cooked on the tree! Leaves were crisp.
90 degree temps seem to be no problem for them.
My yard peaked around 106° during that heat wave, up to 10° cooler than on the east side of Seattle where you are. And I was out watering everything multiple times per day, which seems to help a lot both because it keeps the trees hydrated and the evaporative cooling effect.
My uncovered in-ground loquats did fine even with only weekly watering - no burnt tips. The covered ones I’m sure got to 110+ for a few hours on the 90F days. Next year I’ll have them on a daily drip timer and shade them a bit.
Thanks @swincher and @ramv for sharing your conditions! It sure helps me to figure out what’s what.
I can only supply maybe 5 gallons per minute or so to my orchard hoses. That’s not enough to water everything once a day, let alone multiple times. I had to pick my battles during the heat wave, and that was gated by how much I could tolerate being outside to set the locations.
I wish I had irrigation set up for everything, but its a moving target as I plant more things, and time for the hobby is limited and irregular. Quick deployed irrigation is at odds with weed and pest management - mowing, hoses, cages, weeds - what helps with one often makes the others harder to deal with.
While I’m envious of those of you with larger areas to plant, one benefit of only having my suburban lot is a couple 100 ft hoses reach every corner. I hope to some day have that same problem, though!
I have grown Champagne in shady conditions in the Santa Rosa area of California. I love loquats and I would really like to hear more about growing them here in the Umpqua Valley…
