Citrus Citrus Mon, 16 Mar 2026 03:56:29 +0000 Mon, 16 Mar 2026 03:56:29 +0000 UBC Botanical Garden Forums https://forums.botanicalgarden.ubc.ca/forums/citrus.202/ Citrus "Garden of Eden". Sat, 17 Jan 2026 03:36:54 +0000 https://forums.botanicalgarden.ubc.ca/threads/citrus-garden-of-eden.105431/ https://forums.botanicalgarden.ubc.ca/threads/citrus-garden-of-eden.105431/ invalid@example.com (togata57) togata57 The Todolí Citrus Foundation is a nonprofit venture and the largest private collection of citrus in the world with more than 500 varieties, and its owners think the rare fruit could hold the genetic secrets to growing citrus groves that can deal with climate change.

https://www.theguardian.com/environ...nish-farm-growing-citrus-youve-never-heard-of

https://todolicitrusfundacio.org/en/]]> Lemon seedlings Fri, 26 Sep 2025 05:16:02 +0000 https://forums.botanicalgarden.ubc.ca/threads/lemon-seedlings.104746/ https://forums.botanicalgarden.ubc.ca/threads/lemon-seedlings.104746/ invalid@example.com (TomT) TomT 3 Ichang lemon is doing well, Olympia, WA Thu, 25 Sep 2025 04:22:50 +0000 https://forums.botanicalgarden.ubc.ca/threads/ichang-lemon-is-doing-well-olympia-wa.105123/ https://forums.botanicalgarden.ubc.ca/threads/ichang-lemon-is-doing-well-olympia-wa.105123/ invalid@example.com (SoCal2warm) SoCal2warm View attachment 258796

It was not covered this winter, but is growing in a more protected location, up against the wall of the house.
Olympia, WA, climate zone 8a
(about an hour south of Seattle, although Olympia does usually get just a tad bit colder in winter compared to Seattle)

I am pleasantly surprised it has been surviving and appears to be doing as well as it has.
You can see that some of the newer leaves on...

Ichang lemon is doing well, Olympia, WA]]> 1 Scientists rediscover orange tree variety that may be tolerant to greening disease Sun, 25 May 2025 15:06:22 +0000 https://forums.botanicalgarden.ubc.ca/threads/scientists-rediscover-orange-tree-variety-that-may-be-tolerant-to-greening-disease.105181/ https://forums.botanicalgarden.ubc.ca/threads/scientists-rediscover-orange-tree-variety-that-may-be-tolerant-to-greening-disease.105181/ invalid@example.com (Junglekeeper) Junglekeeper Scientists rediscover orange tree variety that may be tolerant to greening disease​
]]> 2 Lemon plant Sat, 01 Feb 2025 02:01:42 +0000 https://forums.botanicalgarden.ubc.ca/threads/lemon-plant.105010/ https://forums.botanicalgarden.ubc.ca/threads/lemon-plant.105010/ invalid@example.com (Lily52) Lily52 8 In-Ground Bearss (Persian) Lime Tree in South Surrey - Update Mon, 21 Oct 2024 19:29:01 +0000 https://forums.botanicalgarden.ubc.ca/threads/in-ground-bearss-persian-lime-tree-in-south-surrey-update.104765/ https://forums.botanicalgarden.ubc.ca/threads/in-ground-bearss-persian-lime-tree-in-south-surrey-update.104765/ invalid@example.com (leapfrog) leapfrog
The limes this year are plentiful and of a good average size. I think that's due to acclimatization and favourable summer evening temperatures this year - one to two degrees above average. Winter polar vortices, also driven by climate change, have been a challenge, but my winter protection techniques (see earlier posts)...

In-Ground Bearss (Persian) Lime Tree in South Surrey - Update]]> 1 What's wrong with my lemon trees? Sun, 13 Oct 2024 09:29:08 +0000 https://forums.botanicalgarden.ubc.ca/threads/whats-wrong-with-my-lemon-trees.104817/ https://forums.botanicalgarden.ubc.ca/threads/whats-wrong-with-my-lemon-trees.104817/ invalid@example.com (zone denial) zone denial I have 3 potted citrus outdoor all year on the balcony (Meyer, calamondin, and yuzu) and they usually do fine. This spring, though, I started seeing huge, irregular-shaped yellow splotches on the leaves. In April, the garden centre advised repotting with soil for citrus and feeding it with their citrus fertilizer (NPK 3-0-4), which I did at half strength every 2 weeks. I checked the roots at the same time I repotted and they looked okay. The yellow splotches continued, so I switched...

What's wrong with my lemon trees?]]> 21 Orange Tree Container Watering Sat, 05 Oct 2024 18:27:49 +0000 https://forums.botanicalgarden.ubc.ca/threads/orange-tree-container-watering.104801/ https://forums.botanicalgarden.ubc.ca/threads/orange-tree-container-watering.104801/ invalid@example.com (Burgh) Burgh
Its about 36” tall.

I repotted it in a new container with 5-1-1 medium.

5 parts small bark – 1 part perlite – 1 part potting soil.

I did not break the root ball up when I removed it from the shipping container it came in.

I placed it in the center of the pot and packed the 5-1-1 underneath, around and on top.

It seems that the outer edge of the pot get dryer quicker than the center with the root ball.

I...

Orange Tree Container Watering]]> 3 Update on Yuzu and hardy citrus growing outside in WA state (2024) Fri, 06 Sep 2024 20:52:32 +0000 https://forums.botanicalgarden.ubc.ca/threads/update-on-yuzu-and-hardy-citrus-growing-outside-in-wa-state-2024.104725/ https://forums.botanicalgarden.ubc.ca/threads/update-on-yuzu-and-hardy-citrus-growing-outside-in-wa-state-2024.104725/ invalid@example.com (SoCal2warm) SoCal2warm View attachment 255444
It was originally grown from seed, and is now 42 inches tall (106 cm).
It is not covered during the winter. But the small Japanese garden is located in the downtown area of the city, and is enclosed by a high fence. So the spot is mostly protected from colder winds. It probably does not get as cold there as more open rural areas further away from the city. It's a very optimal spot. From what I've seen,...

Update on Yuzu and hardy citrus growing outside in WA state (2024)]]> Potted Meyers Lemon loosing new fruit Sat, 31 Aug 2024 19:42:51 +0000 https://forums.botanicalgarden.ubc.ca/threads/potted-meyers-lemon-loosing-new-fruit.104631/ https://forums.botanicalgarden.ubc.ca/threads/potted-meyers-lemon-loosing-new-fruit.104631/ invalid@example.com (Steve777) Steve777
Potted Meyers Lemon loosing new fruit]]> 1 Black spots developing on yuzu leaves and branches Sun, 11 Aug 2024 14:59:55 +0000 https://forums.botanicalgarden.ubc.ca/threads/black-spots-developing-on-yuzu-leaves-and-branches.104611/ https://forums.botanicalgarden.ubc.ca/threads/black-spots-developing-on-yuzu-leaves-and-branches.104611/ invalid@example.com (Saffrondreams) Saffrondreams 1 Cold hardy citrus in WA state update May 2021 Thu, 08 Aug 2024 17:44:09 +0000 https://forums.botanicalgarden.ubc.ca/threads/cold-hardy-citrus-in-wa-state-update-may-2021.100532/ https://forums.botanicalgarden.ubc.ca/threads/cold-hardy-citrus-in-wa-state-update-may-2021.100532/ invalid@example.com (SoCal2warm) SoCal2warm
[​IMG]


The Ichang papeda has been much later than the other hardy citrus varieties to begin recovering its color.


Ichangquat seedling, some of the leaves are beginning to recover, which is surprising. The leaves looked so pale before. It still has not grown any new leaves....

Cold hardy citrus in WA state update May 2021]]> 3 Blood Orange Issue Fri, 02 Aug 2024 20:32:00 +0000 https://forums.botanicalgarden.ubc.ca/threads/blood-orange-issue.104597/ https://forums.botanicalgarden.ubc.ca/threads/blood-orange-issue.104597/ invalid@example.com (Mo122) Mo122
I have this blood Orange that is 2-3 years old in the grond. In the summer months usually the leaves turn Yellow and fall (a lot of them not all). The Tree does bear fruit. I water 4-5 gallon a week (twice a week, total of 5 gallon or so) and do fertilize 3 times a year with Citrust fertilizer. The plant does not look thirsty. I also recently sprayed it with Captain Jack captain jacks deadbug as I felt it could be small bugs attacking the leaves. What could be the reason that...

Blood Orange Issue]]> To Prune, Or Not To Prune? Sun, 19 May 2024 19:10:23 +0000 https://forums.botanicalgarden.ubc.ca/threads/to-prune-or-not-to-prune.104448/ https://forums.botanicalgarden.ubc.ca/threads/to-prune-or-not-to-prune.104448/ invalid@example.com (Obren Bokich) Obren Bokich
I planted this Persian lime tree in a raised bed in June of last year. Per the nursery's instructions, I waited a year to start feeding it. We had some serious wind during the winter, which stripped some of the branches. There is some new leaf growth. As you can see the wind mostly took out leaves from the top half. Should I prune it, and if so how much and what part of the tree?]]> Meyer Lemon root issues? Mon, 13 May 2024 01:02:05 +0000 https://forums.botanicalgarden.ubc.ca/threads/meyer-lemon-root-issues.102903/ https://forums.botanicalgarden.ubc.ca/threads/meyer-lemon-root-issues.102903/ invalid@example.com (betsyyyyy) betsyyyyy
Meyer Lemon root issues?]]> 4 Off grid micro citrus greenhouse, peltier heater, solar powered. Tue, 23 Apr 2024 05:40:21 +0000 https://forums.botanicalgarden.ubc.ca/threads/off-grid-micro-citrus-greenhouse-peltier-heater-solar-powered.104355/ https://forums.botanicalgarden.ubc.ca/threads/off-grid-micro-citrus-greenhouse-peltier-heater-solar-powered.104355/ invalid@example.com (SDcitrus) SDcitrus
Off grid micro citrus greenhouse, peltier heater, solar powered.]]> Kumquat with no leaves Tue, 26 Mar 2024 12:30:25 +0000 https://forums.botanicalgarden.ubc.ca/threads/kumquat-with-no-leaves.104185/ https://forums.botanicalgarden.ubc.ca/threads/kumquat-with-no-leaves.104185/ invalid@example.com (Martina Fjällberg) Martina Fjällberg
Kumquat with no leaves]]> 3 Meyer lemon hibernating (?) in winter, one is one isnt Mon, 25 Mar 2024 22:41:05 +0000 https://forums.botanicalgarden.ubc.ca/threads/meyer-lemon-hibernating-in-winter-one-is-one-isnt.104214/ https://forums.botanicalgarden.ubc.ca/threads/meyer-lemon-hibernating-in-winter-one-is-one-isnt.104214/ invalid@example.com (JennieClaire) JennieClaire View attachment 248976 I have two Myer lemon trees. They are treated exactly the same. I have had them for about four years. They have both borne fruit. However, one tree loses all its leaves in the winter, and the other doesn’t. They live outside in the summer and inside in the winter. What’s going on?]]> 3 Meyer Lemons from seed indoors Fri, 15 Mar 2024 07:07:13 +0000 https://forums.botanicalgarden.ubc.ca/threads/meyer-lemons-from-seed-indoors.102220/ https://forums.botanicalgarden.ubc.ca/threads/meyer-lemons-from-seed-indoors.102220/ invalid@example.com (Erocks) Erocks
Meyer Lemons from seed indoors]]> 7 Citrus trifoliata Rootstock Tue, 30 Jan 2024 05:01:39 +0000 https://forums.botanicalgarden.ubc.ca/threads/citrus-trifoliata-rootstock.104015/ https://forums.botanicalgarden.ubc.ca/threads/citrus-trifoliata-rootstock.104015/ invalid@example.com (BrendaG) BrendaG Chocolate oranges Sun, 28 Jan 2024 09:38:42 +0000 https://forums.botanicalgarden.ubc.ca/threads/chocolate-oranges.104008/ https://forums.botanicalgarden.ubc.ca/threads/chocolate-oranges.104008/ invalid@example.com (Junglekeeper) Junglekeeper
]]> 2 Citrus sorbet and slushies Thu, 25 Jan 2024 20:47:40 +0000 https://forums.botanicalgarden.ubc.ca/threads/citrus-sorbet-and-slushies.103985/ https://forums.botanicalgarden.ubc.ca/threads/citrus-sorbet-and-slushies.103985/ invalid@example.com (Will B) Will B
For those wondering what to do with the large amount of fruit that citrus plants can produce this makes a great additional way of enjoying your bountiful harvest. Our usual process (apart from the fruit we eat...

Citrus sorbet and slushies]]> 3 Lovely harvest Wed, 17 Jan 2024 19:40:55 +0000 https://forums.botanicalgarden.ubc.ca/threads/lovely-harvest.103981/ https://forums.botanicalgarden.ubc.ca/threads/lovely-harvest.103981/ invalid@example.com (Will B) Will B
We have been steadily harvesting lovely baskets of citrus fruit from our collection of 58 different kids of citrus. This Sunday we picked Kiyomi Tangors,...

Lovely harvest]]> Key Lime(thorn) Fri, 24 Nov 2023 13:00:57 +0000 https://forums.botanicalgarden.ubc.ca/threads/key-lime-thorn.103850/ https://forums.botanicalgarden.ubc.ca/threads/key-lime-thorn.103850/ invalid@example.com (Korene Julien) Korene Julien I haven’t transplanted it yet and not sure if I should or wait till spring.
Do I thin out some of the flower buds or leave them? Will the leaves come back....

Key Lime(thorn)]]> 8 What’s wrong with my Meyer lemon tree? Thu, 12 Oct 2023 17:58:44 +0000 https://forums.botanicalgarden.ubc.ca/threads/what%E2%80%99s-wrong-with-my-meyer-lemon-tree.103747/ https://forums.botanicalgarden.ubc.ca/threads/what%E2%80%99s-wrong-with-my-meyer-lemon-tree.103747/ invalid@example.com (Minnie Tang) Minnie Tang
Ever since I brought in indoors, it's been struggling. The leaves (it starts in the veins) turn yellow and then they fall off. It's lost a lot of leaves already and I'm trying to prevent more loss.

It has a few small lemons that grew over the summer. They're still quite small so I'm wondering if it's normal for them to...

What’s wrong with my Meyer lemon tree?]]> 6