Plant Care, Propagation, Identification, Appreciation and more! Thu, 05 Mar 2026 23:58:27 +0000 Thu, 05 Mar 2026 23:58:27 +0000 UBC Botanical Garden Forums https://forums.botanicalgarden.ubc.ca/forums/fruit-and-nut-trees.146/ Sun, 14 Dec 2025 06:29:03 +0000 https://forums.botanicalgarden.ubc.ca/threads/maybe-o-t-japanese-mandarin-oranges.104952/ https://forums.botanicalgarden.ubc.ca/threads/maybe-o-t-japanese-mandarin-oranges.104952/ invalid@example.com (Junglekeeper) Junglekeeper https://bcfoodhistory.ca/japanese-mandarin-oranges/). Perhaps that is why they are still sought out at this time of year. However these tasty morsels have been somewhat difficult to find in recent years. If you are looking for them, the good news is they are now available at Kin's Farm Market. The boxed product is from Ajimaru and weights approximately 1.25kg. The bad news is the price of $25/box....

(Maybe O/T) Japanese mandarin oranges]]> 1 Tue, 16 Sep 2025 18:19:42 +0000 https://forums.botanicalgarden.ubc.ca/threads/desperatly-seeking-reine-claude-and-mirabelle.36930/ https://forums.botanicalgarden.ubc.ca/threads/desperatly-seeking-reine-claude-and-mirabelle.36930/ invalid@example.com (dominique nonnon) dominique nonnon I am thinking of bringing some stones from France on my next trip but straight from the seed and without grafting it will take an eternity if they ever...

Desperatly seeking Reine Claude and Mirabelle...]]> 29 Wed, 27 Aug 2025 04:12:19 +0000 https://forums.botanicalgarden.ubc.ca/threads/best-time-to-prune-a-black-walnut-tree.104999/ https://forums.botanicalgarden.ubc.ca/threads/best-time-to-prune-a-black-walnut-tree.104999/ invalid@example.com (sun lover) sun lover Best time to prune a black walnut tree in the Gulf Islands? (Not sure what this cold snap may do, but everything in the garden already is emerging or budding.)

Thanks for your thoughts!]]> 1 Wed, 27 Aug 2025 01:46:35 +0000 https://forums.botanicalgarden.ubc.ca/threads/why-are-walnut-trees-grafted-onto-black-walnut-rootstock.105279/ https://forums.botanicalgarden.ubc.ca/threads/why-are-walnut-trees-grafted-onto-black-walnut-rootstock.105279/ invalid@example.com (DavidB52) DavidB52
One practice that seems to be quite common is to graft Walnut trees onto Black Walnut rootstock. This is done for both Butternut trees and Persian Walnut trees. It's made me curious. Why is this done?

Black Walnut trees are pretty aggressive growers. Their roots go down real deep, real fast. Is this the reason? Does it make the tree more resistant to more infections?

Also, does this mean the tree emits...

Why are Walnut Trees Grafted onto Black Walnut Rootstock?]]> Tue, 19 Aug 2025 04:29:49 +0000 https://forums.botanicalgarden.ubc.ca/threads/pluot-tree-in-lower-mainland.104014/ https://forums.botanicalgarden.ubc.ca/threads/pluot-tree-in-lower-mainland.104014/ invalid@example.com (sean86114) sean86114 7 Mon, 07 Jul 2025 05:18:26 +0000 https://forums.botanicalgarden.ubc.ca/threads/chokecherry-galls-worms.105234/ https://forums.botanicalgarden.ubc.ca/threads/chokecherry-galls-worms.105234/ invalid@example.com (Bob Dunn) Bob Dunn Can someone suggest a treatment?]]> 1 Thu, 26 Jun 2025 02:05:15 +0000 https://forums.botanicalgarden.ubc.ca/threads/montmorency-cherry-overwatering-underwatering-or-leaf-spot-disease.105223/ https://forums.botanicalgarden.ubc.ca/threads/montmorency-cherry-overwatering-underwatering-or-leaf-spot-disease.105223/ invalid@example.com (jpasquini) jpasquini I planted four of these Montmorency Cherry trees this spring, they were all doing great until summer started. They have all stopped growing, even though I am watering them regularly with fertilizer. I put a bucket of water on each every few days. They have been looking great, until the summer heat came in. I live in the Midwest, Illinois.

The last several days have been very close to the 100s, with brutal humidity. Suddenly, one...

Montmorency Cherry: Overwatering, underwatering, or leaf spot disease?]]> Sun, 23 Mar 2025 18:13:00 +0000 https://forums.botanicalgarden.ubc.ca/threads/fertilizing-trees-with-groundcover.105071/ https://forums.botanicalgarden.ubc.ca/threads/fertilizing-trees-with-groundcover.105071/ invalid@example.com (Squally) Squally
I have a couple fruit trees and berry shrubs in large pots. These pots also have a variety of groundcover plants growing in them. Does anyone have a recommendation for how to apply fertilizer for the purpose of supporting the trees/shrubs? I can't just add to the top of the soil as the groundcover plants are mostly in the way. To date I've either been watering fertilizer into the pots or lifting up the mats of groundcover and applying fertilizer underneath them where possible.

I...

Fertilizing Trees with Groundcover]]> Sun, 02 Mar 2025 06:18:20 +0000 https://forums.botanicalgarden.ubc.ca/threads/botanical-name-for-a-sour-green-plum-from-iran-called-goje-sabz.85693/ https://forums.botanicalgarden.ubc.ca/threads/botanical-name-for-a-sour-green-plum-from-iran-called-goje-sabz.85693/ invalid@example.com (mcalpin1) mcalpin1
Below is the result of your feedback form. It was submitted by
Alex (alexmojee@.com) on Monday, April 13, 2015 at 02:59:10
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referer: http://www.backyardgardener.com/searchsw.html
phone:
comments: Hello,
Thank you for your website.
I am looking for the botanical name for a sour green plum from Iran called "Goje Sabz" I would like to buy the tree and...

Botanical name for a sour green plum from Iran called "Goje Sabz"]]> 3 Sun, 02 Mar 2025 02:13:52 +0000 https://forums.botanicalgarden.ubc.ca/threads/what-causes-this-fine-spider-web-like-strands-on-fig-tree-leaves.105039/ https://forums.botanicalgarden.ubc.ca/threads/what-causes-this-fine-spider-web-like-strands-on-fig-tree-leaves.105039/ invalid@example.com (sjs) sjs
Does anyone know what causes this? Is it some insect or something the plant produces itself?]]> 5 Wed, 25 Dec 2024 05:14:50 +0000 https://forums.botanicalgarden.ubc.ca/threads/looking-for-gold-kiwi-plants.79941/ https://forums.botanicalgarden.ubc.ca/threads/looking-for-gold-kiwi-plants.79941/ invalid@example.com (pmurphy) pmurphy Thanks]]> 62 Tue, 01 Oct 2024 16:24:18 +0000 https://forums.botanicalgarden.ubc.ca/threads/pear-rust.104794/ https://forums.botanicalgarden.ubc.ca/threads/pear-rust.104794/ invalid@example.com (Siobhan) Siobhan
can we save pear trees severely infected by rust?
What tactics are worth trying?]]> 3 Sun, 15 Sep 2024 08:50:41 +0000 https://forums.botanicalgarden.ubc.ca/threads/fig-tree-damage.104752/ https://forums.botanicalgarden.ubc.ca/threads/fig-tree-damage.104752/ invalid@example.com (Adam Ding) Adam Ding Anyone knows what happened, and how to fix it?
Thanks]]> 1 Wed, 11 Sep 2024 16:56:45 +0000 https://forums.botanicalgarden.ubc.ca/threads/will-these-turn-into-fruits-on-my-star-fruit-plant.104744/ https://forums.botanicalgarden.ubc.ca/threads/will-these-turn-into-fruits-on-my-star-fruit-plant.104744/ invalid@example.com (Pankaj Rajpali) Pankaj Rajpali I’ve got a star fruit (carambola) plant, and it’s currently showing some small buds/flowers. I’m wondering if these will eventually develop into fruits or if there’s something else I need to do to ensure fruiting. Any advice on how to care for the plant at this stage would be really appreciated! Thanks in advance.]]> 2 Sun, 01 Sep 2024 04:29:28 +0000 https://forums.botanicalgarden.ubc.ca/threads/golden-plum-with-fungus.104701/ https://forums.botanicalgarden.ubc.ca/threads/golden-plum-with-fungus.104701/ invalid@example.com (Dawnmvo) Dawnmvo 2 Tue, 27 Aug 2024 15:31:08 +0000 https://forums.botanicalgarden.ubc.ca/threads/bushrue-uses.104608/ https://forums.botanicalgarden.ubc.ca/threads/bushrue-uses.104608/ invalid@example.com (DavidB52) DavidB52 This is kind of surprising because searches I have done on the Internet indicate that Bushrue is native to California. I wonder how it would get up here AND survive the winters.

In any case, does this plant have any uses? It seems to be popular for erosion control. But I see no mention of the berries being useful, or being a companion plant, or being a nitrogen-fixer, etc.

Anybody here know more about Bushrue?...

Bushrue Uses?]]> 7 Mon, 26 Aug 2024 20:08:55 +0000 https://forums.botanicalgarden.ubc.ca/threads/hazelnut-issue.104684/ https://forums.botanicalgarden.ubc.ca/threads/hazelnut-issue.104684/ invalid@example.com (Jon B) Jon B 1 Tue, 06 Aug 2024 03:59:36 +0000 https://forums.botanicalgarden.ubc.ca/threads/cherries-fermented-on-tree.104605/ https://forums.botanicalgarden.ubc.ca/threads/cherries-fermented-on-tree.104605/ invalid@example.com (Diane Whitehead) Diane Whitehead
Usually raccoons eat all the cherries that are higher than I can pick, but this year only a few cherries were eaten - I guess they didn't like the taste.]]> 4 Tue, 02 Jul 2024 16:09:37 +0000 https://forums.botanicalgarden.ubc.ca/threads/mature-fruiting-cherry-help-pruning.104522/ https://forums.botanicalgarden.ubc.ca/threads/mature-fruiting-cherry-help-pruning.104522/ invalid@example.com (Hootie) Hootie I have this big cherry. I have lots of dead limbs. When can I safely prune them? August? Or when?
Any pruning tips really would be greatly appreciated. I have experience pruning but not fruit trees.
Thanks in advance.

View attachment 254804 View attachment 254805]]> 4 Sun, 02 Jun 2024 14:45:00 +0000 https://forums.botanicalgarden.ubc.ca/threads/replant-hazelnut-bushes.104495/ https://forums.botanicalgarden.ubc.ca/threads/replant-hazelnut-bushes.104495/ invalid@example.com (BryanB) BryanB 1 Thu, 11 Apr 2024 06:45:23 +0000 https://forums.botanicalgarden.ubc.ca/threads/no-flowers-for-my-green-gage-european-plum-tree.104226/ https://forums.botanicalgarden.ubc.ca/threads/no-flowers-for-my-green-gage-european-plum-tree.104226/ invalid@example.com (Addone9001) Addone9001
Why does it have no flowers? What can I do? Thanks a lot!]]> 7 Wed, 10 Apr 2024 04:34:15 +0000 https://forums.botanicalgarden.ubc.ca/threads/reference-for-which-japanese-plum-cultivars-can-cross-pollinate-with-a-black-amber-plum.104291/ https://forums.botanicalgarden.ubc.ca/threads/reference-for-which-japanese-plum-cultivars-can-cross-pollinate-with-a-black-amber-plum.104291/ invalid@example.com (Hannihanni) Hannihanni 3 Wed, 27 Mar 2024 00:25:18 +0000 https://forums.botanicalgarden.ubc.ca/threads/brown-turkey-fig-suffering.104216/ https://forums.botanicalgarden.ubc.ca/threads/brown-turkey-fig-suffering.104216/ invalid@example.com (Silvana Sulstarova) Silvana Sulstarova This spring I'm noticing some alarming signs on the younger stems. The growth from last year is completely dark and dull looking. Some are covered in white and some in pink spots.
Thinking of pruning it heavily to get rid of diseased branches.
Any advice would be appreciated!
Silvana]]> 1 Tue, 19 Mar 2024 01:15:58 +0000 https://forums.botanicalgarden.ubc.ca/threads/where-can-i-buy-an-almond-tree.27184/ https://forums.botanicalgarden.ubc.ca/threads/where-can-i-buy-an-almond-tree.27184/ invalid@example.com (LeonaS) LeonaS
I live in the Creston Valley and would like to buy and grow an Almond Tree.

Is there a nursery in BC, Canada that sells them? Can you buy and have them shipped to Canada from the USA?

Thanks for your help,

LeonaS]]> 11 Sun, 17 Mar 2024 09:50:04 +0000 https://forums.botanicalgarden.ubc.ca/threads/sumac-tree-is-not-fruitful.104179/ https://forums.botanicalgarden.ubc.ca/threads/sumac-tree-is-not-fruitful.104179/ invalid@example.com (Ronak) Ronak Thanks in advance]]> 2