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Messages - incubator01

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1
Cold Hardy Citrus / Re: trifoliate orange not growing new foliage or anything
« on: Today at 06:05:40 AM »
Quote from: mikkel on May 20, 2022, 06:21:03 PM
Have you looked for snails? I have several types of citrus close to each other in my garden, some are attacked by snails, others are not. I just discovered it by chance, because they appear only in the evening. The slugs specifically attack the new growth, so it looks like the plant is still in dormancy.

The plant is in a container on my terrasse, no snails there, they never come anywhere near that place ;)
In my greenhouse however where my other citrus and pepper plants are, I did place anti snail stuff because they do appear there but this year they weer in small numbers.

2
Cold Hardy Citrus / Re: trifoliate orange not growing new foliage or anything
« on: May 20, 2022, 10:01:09 AM »
Quote from: pagnr on May 20, 2022, 05:18:38 AM
I think you could use the word "rootstock" as "root system" in the case of a seedling trifoliata.
Normally I would resist pruning to fix root issues.
However in some case with weak plants that try to flush too many buds, pruning back can help a better flush ( on less buds ).
It has also been said that trifoliata thorns can also photosynthesise prior to leaf emergence, so don't trim them in some cases.

Don't worry, I was not planning on pruning anything, not even thorns. All I did last month was prune awy 2 small parts that were just inconvenient in the way, but even there i see no change so their theory did not work.
I'll just wait patiently.

3
Cold Hardy Citrus / Re: trifoliate orange not growing new foliage or anything
« on: May 20, 2022, 03:18:08 AM »
In the beginning I also sent this question to oscar tintori but they gave me a rather weird reply:

Quote
if the vegetation does not restart, probably the reason is the rootstock. If the rootstock doesn't develop, maybe there is a stagnation of water or a fungus attack.
Our suggestion is bringinging the plants to restart growing with a pruning that togeter with the temperatures of this season and the fertilisation could let the vegetation growing again.

this trifoliate "is" the rootstock lol, they said it was from seeds themselves xD oh god, i fear language issues are at hand here

4
Cold Hardy Citrus / Re: trifoliate orange not growing new foliage or anything
« on: May 19, 2022, 02:31:25 PM »
ok, thanks for confirming this everyone, i fel much more relieved now:D
I was worried they'd damaged him too bad from pruning and he'd be in some sort of emergency recovery mode with a chance of dying but glad to hear it's not :)

5
Cold Hardy Citrus / Re: trifoliate orange not growing new foliage or anything
« on: May 19, 2022, 01:18:07 PM »
Ah ok, thanks for the reassuring :)
I just hope it won't miss out on our small summer.

6
Cold Hardy Citrus / trifoliate orange not growing new foliage or anything
« on: May 19, 2022, 08:47:55 AM »
Hi,

last summer I bought a trifoliate orange from oscar tintori, 3 very nice developed plants grown into one huge root crown. The plant was full of small leaves but they sawed (I can still see the saw tooth ridges) some thicker branches to fit in the box.

In autumn it loses it's leaves, which is normal since it's deciduous, but now we're May and it's been getting plenty of sun, it got the usual slow release fertilizer mid march, the branches look green and lush, though some thorns and where it was sawed off have a yellow edge.
There are no signs of new buds, flowers of leaves, there are also no signs of damage or degradation, the branches do not turn brown or do not dry out, so I am confused as to why it isn't doing anything.
It was transplanted in a bigger pot with good soil mix last summer upon arrival, roots were washed out, the plant did not suiffer from this at all, I expected leaf drop but there was nothing, so I was happy to have a strong plant, but now I am wondering if he's adapting to our climate or needs a year to recover from the pruning or something else?

It stayed in my greenhouse in the winter, since it's cold hardy no additional protection was needed.
The only thing that still has leaves is a very young tiny shoot between those 3 plants but that one remains small. Since they're all grown from seed and not grafted , it's not a sucker so removal should not be required.

7
Citrus General Discussion / Re: sunburn from led lights?
« on: May 10, 2022, 05:30:40 PM »
Quote from: Millet on May 10, 2022, 04:29:51 PM
Thousands of citrus trees in Florida are grafted upon Carrizo. The humidity in Florida reaches up to 100%.

but florida doesn't have cold temperatures in the winter / spring like Belgium. ther's the difference
Florida is citrus heaven, Belgium is not. As much as I wanted to grow other kinds here,  I just can't. Unless I invest in a complete isolated controlled environment.
So I have to stick with certain rootstocks and certain scions that are more resistant to our climate.
So far Yuzu & Shikuwasa are proving to be very successful here.
Poncirus by itself too, but mine doesn't seem to grow new leaves yet, probably because oscar tintori sawed off a lot of the thicker branches for grafting purposes.

8
Citrus General Discussion / Re: sunburn from led lights?
« on: May 10, 2022, 01:09:28 PM »
Quote from: poncirsguy on May 10, 2022, 08:29:43 AM
Fukushu = Changshou  is correct.  My area is so humid I get  mold on my car body by early spring.  If your tree is grafted to phytophera resistant rootstock it will be no problem.

Well, like I said all the volkamerian or macrphylla rootstocks failed on me, my last kumquat died real fast in a few days, due to humidity. Same with many kaffir limes i had. Citrus on PT or citrumelo swingle perform much better here. They can take a serious beating before they die from moisture. And so far they're my favorite rootstocks :)
Granted I'm not as experienced as many of you, though I am learning and improving, but I quickly found out volkamerian and macrophylla were very sensitive compared to PT and citrumello swingle. Carrizo is also very sensitive, at least here, it also couldn't handle air humidity of 80% during early spring.

9
Citrus General Discussion / Re: sunburn from led lights?
« on: May 10, 2022, 07:27:04 AM »
Quote from: poncirsguy on May 07, 2022, 11:35:32 PM
Quote from: incubator01 on May 07, 2022, 06:24:30 PM
Quote from: poncirsguy on May 06, 2022, 07:15:45 PM
Meiwa  and nagami are very hard to grow.  Fukushu kumquats grow much better.

According to oscar tintori the Fukushu is unsuited to humid areas because susceptible to phytophera.
So also not good for my region.
I certainly hope not..  My healthiest trees are all Fukushu kumquats

Well I got it from here: https://www.oscartintori.it/en/prodotto/changshou-kumquat/
I know it sais Changshou but according to other sites this is another name for the Fukushu kumquat.
So if their info is inaccurate, shame on them :(

10
Citrus General Discussion / Re: sunburn from led lights?
« on: May 07, 2022, 06:24:30 PM »
Quote from: poncirsguy on May 06, 2022, 07:15:45 PM
Meiwa  and nagami are very hard to grow.  Fukushu kumquats grow much better.

According to oscar tintori the Fukushu is unsuited to humid areas because susceptible to phytophera.
So also not good for my region.

11
Citrus General Discussion / Re: Meyer lemon as graft stock for other citrus
« on: May 06, 2022, 06:36:02 PM »
I had a meyer lemon grafted on carrizo rootstock but it died in februari, it was hibernating in a shelter so no frost damage, but as soon as I could put it outside again it didn't like the humid air and dropped all the leaves, plant died, end of story.

12
Citrus General Discussion / Re: sunburn from led lights?
« on: May 06, 2022, 06:29:34 PM »
Quote from: pagnr on May 02, 2022, 02:20:00 AM
Is general seedling soil a commercial product. If so any more details. Is it something normally used for flats and punnets ??

https://www.gamma.be/nl/assortiment/agrofino-zaai-en-stekgrond-40-l/p/B240061

there.
It's just standard well draining seeding soil mixed with some perlite.
Almost every commercial brand has some sort of seeding soil blend, not all recipes are the same but that doesn't matter.
The seeds germinated well in that soil; it's my fault the seedlings died.

Also the adult kumquats died too, they just couldn't handle our diverse climate, temp change and humidity and both a big 5 y/o tree and a 2y/o tree died, all leaves dropped and branches turned brown.

No kumquats for belgium that's for sure. I stick to Yuzu and shikuwasa, they work really well here :)

13
Citrus General Discussion / Re: sunburn from led lights?
« on: May 01, 2022, 04:49:25 PM »
Quote from: pagnr on May 01, 2022, 07:50:16 AM
What is the pot media they are planted in. Looks like 100% fine sawdust, peat or coir ??
You say Citrus has problems in it, but Tomatoes and Capsicum do not.
A small Citrus seedling will have a tap root well down into the pot thru various moisture zones, while a Capsicum seedling will have a more fibrous root system staying in the upper levels with better air and drainage. If you use the same media in taller narrow pots, the Citrus roots will be in a higher air zone for longer.
If possible check the pH of the mix with a test kit.

Those seedlings from the kumquat in the first post were still in seedling soil, so general seedling soil without adding coco coir or anything else.
My kaffir lime seedlings have grown beyond that stage and are already transplanted in soil with 50/50 peat/turface.

Regardless of the plant i always start out seeds in general seedling soil.

14
Citrus General Discussion / Re: sunburn from led lights?
« on: May 01, 2022, 07:08:02 AM »
Quote from: catheshellman on April 29, 2022, 07:03:29 PM
I suppose that sunburn can occur due to two reasons.

I still think they died from too much nutrition like Millet said, the kaffir lime seedlings i planted in august (that I mentioned 1 posts ago) still live, though they haven't grown much yet, they are now starting, but a month ago I thought it'd be a good idea and give them a thinned out version of nutrition and root booster, I saw the same leaf damage appear not long after and some leaves were lost. But new strong vibrant green ones are growing back. These kaffir seedlings have been under a LED all winter btw.

Ever since I'm very careful with feeding seedlings, and nutrition in general.

But you did forget to add your "two reasons" so your post was incomplete

15
Citrus General Discussion / Re: large brown spots on kumquat leaves
« on: March 30, 2022, 11:55:12 AM »
Can't be sunburn because it had this even in the winter, and we are now having spring sun.
When I gently (not deeply) sprayed the roots they still looked bright yellow.
I am starting to think there's a fungus at work but again, I'm unsure :(
I did notice more parts of branches turning brown which does indicate lower parts of the soil may still be too moist, or he's dying slowly.
A shame since this is a tree with a thick trunk that was delivered last year in a 44cm diameter pot, but at the root flare I did notice some vertical cut (damage or crack) in the the bark, maybe this introduced a fungus.

For now all I can do is wait and trim down everything that turns brown. I could always intermediate spray with an anti fungal product but since there are no more leaves I don't know if it'll work.

16
Citrus General Discussion / large brown spots on kumquat leaves
« on: March 29, 2022, 07:08:33 AM »
I have a very large kumquat tree since last year (spring) and after a few months it started to lose leaves, first green ones, then some started showing brown spots. Despite all this it survived the winter and since its pot was too big anyway I transplanted it into full soil (mixed with peat and pine bark) in my greenhouse since my citrus do better there.
Currently the soil is medium-dry (definitely not wet), I watered it one week ago.

But it is now losing all of its leaves, most with the brown spots.
It's a fortunella reale kumquat grafted on volkamerian rootstock.
Included are images of the leaves, I don't know what this is, overwatering would be weird since I watered sparingly during the winter. At first I thought it was Citrus Alternaria Brown Spot but those spots look different.





17
Citrus General Discussion / Re: Meyers Lemon Tree
« on: November 14, 2021, 05:23:45 PM »
and besides that fact, keep in mind that not all of the leaves will restore to green, once a leaf hits yellow there's a certain time window until it reaches a point of no return.
So once you fertilize as previously mentioned, you should see a portion of leaves change color and some not, but all the new growth should have a better color, if not, you're still not giving enough or the wrong fertilizer.

18
Cold Hardy Citrus / Re: yellow branches on poncirus
« on: October 15, 2021, 05:33:25 PM »
Quote from: Zitrusgaertner on October 15, 2021, 02:34:09 PM
Yellow twigs are a sign of some kind of lack of nutrients.

shouldn't be since it's been fed in september with a proper slow release fertilizer I use on all my citrus. And this is the last time until march that it got food since the cold is coming.
So far no other branches turned yellow, plant is showing nice autumn leaf colors and simply needs a watering tomorrow.

19
Cold Hardy Citrus / Re: yellow branches on poncirus
« on: October 11, 2021, 12:35:54 AM »
Quote from: Millet on October 10, 2021, 06:13:30 PM
It is now getting close to the middle of October.  Some leaves on my trifoliate are turning yellow.  It is normal at this time of year.

For the leaves i understand but i didn't know thin branches would turn yellow too.
I thought only leaves would be affected.

20
Cold Hardy Citrus / yellow branches on poncirus
« on: October 10, 2021, 05:00:34 PM »
So, I am aware the poncirus trifoliate is deciduous and will lose its leaves in autumn, mine is doing so, but some branches on the lower end of the trunk (thin branches) turned completely yellow.
Is this also normal within the deciduous  phase or not? I pruned them off since they were not needed anyway but I haven't watered it in a week, and last week I watered it a bit according to winter regime, my other plants in the same soil do fine so this one's a bit of an oddball.

21
Citrus General Discussion / Re: Yuzu Leaf Diagnosis - Hypopigmentation?
« on: October 02, 2021, 06:15:31 AM »
the back of that leaf certainly has a lot of dark dots, if it's not dirt, it could be bugs? (mites, aphids?)
Try spraying the back of those leaves with water so they're clean and see if it gets worse or the spots come back. If so you may need some neem oil based product.

Indoors many plants get insects because it's a lot warmer there, I had armored scale in january once on a kaffir lime, it was terrible :( there was a whole colony on every branch.

22
Citrus General Discussion / Re: Trying A New Growth Medium
« on: October 02, 2021, 06:06:02 AM »
I too have been using this potting soil for 7 weeks now, even transplanted a young meyer in it and it is (so far) not showing any stress at all.
The others had a bigger root ball and were much more difficult to remove the old clay soil from so they suffered more stress but they recovered and stabilized.
I even put succulents in it and they love it too.

So i'm very happy with this mix, it does drain really well and dries out better, does not form hard lumps etc.
I'm anxious for spring now :)

23
Citrus General Discussion / Re: repotting a young meyer in september?
« on: September 22, 2021, 02:47:26 AM »
Yeah i was indeed planning to soak it in a tub,/ bucket and gently removing the dirt with my fingers.
With bigger plants this won't work because the clay core is too dense.

24
Citrus General Discussion / Re: repotting a young meyer in september?
« on: September 21, 2021, 02:19:55 PM »
Quote from: Millet on September 21, 2021, 10:52:54 AM
As a point of clarification citrus don't go dormant. Their growth does slow down, but not dormant. Over the years I have transplanted citrus during every time of the year.   About 95% of damage to a root system during transplanting is caused by the person doing the transplanting.  A careful, not rushed transplanting can be carried out at any time.

Well over here they call it "dormant" because our temperatures get a bit colder and they drink very little because there is much less sunlight and the days are shorter.
But anyway, it's true they do grow much slower :)
I'll try to be careful with the meyer, if the soil is loose enough I don't have to use a hose and give a gentle wash by hand instead, it's just that most citrus from italy are planted in very hard clay, they even admitted this had to be done for their climate, and is an annoyance when needing to change soil.

25
Citrus General Discussion / Re: sunburn from led lights?
« on: September 21, 2021, 02:15:21 PM »
Quote from: Millet on September 21, 2021, 10:45:12 AM
I seriously doubt the slight damage to incubator's tree leaves was caused by LED lighting.  I agree the leaves show soluble salts damage from the fertilizer over supply.

And I too agree with your conclusion.
To try out I planted some kaffir lime seeds in the end of august, atm 2 seedlings are growing slowly but healthy and 2 are about to stick their heads out.
I did not feed them with anything at all yet, (so for one month now I watered with rain water without any kind of nutrients) and I used a soil of seeding soil mixed with some coco fiber.
They're doing very nice, good green leaves, tiny but healthy. and I put them under 14h of LED light, even placed a second one next to it to cover larger area, no problems at all.
With the kumquat seedlings and even with some adult citrus I admit I probably gave too much food and that caused this issue.

So I will wait with giving nutrients until they grow 3 pairs of true leaves and then I start with liquid fertilizer, but one that is on the weak side, because if I give a strong one right away I might kill them again.

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