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Citrus Garden Clinic

Kumquat yellowing leaves?

2 years ago

I have gone through all of the sicknesses illnesses and deficientcies that i could find, none of them seem to match

Featured Answer

Dave in NoVA • N. Virginia • zone 7A

2 years ago

last modified: 2 years ago

Your plant is showing trifoliate leaves. So what has happened is your rootstock has overgrown the edible variety. If you see any growth with monofoliate leaves, that is what is left of your edible variety (kumquat). If not, then the edible variety has died out. Rootstock, if allowed to grow shoots, will often out-compete the edible variety.

Many of the trifoliate hybrids used as rootstock are semi-deciduous. Leaves will often turn yellow and drop all winter long. You're seeing normal winter leaf drop from rootstock.

Comments (9)

Nathan Morgan
Original Author
2 years ago
its inside right now because its too cold, going out soon
poncirusguy6b452xx
2 years ago
Those leave look like the tree is extracting nutrients from before dropping them. Most of them are older and ready to drop. What kind of kumquat is it. Meiwas are the hardest to grow.
Nathan Morgan thanked poncirusguy6b452xx
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I suggest checking the soil moisture in the pot with a dowel. It is possible that the soil has dried out and is now hydrophobic. If it is dry, then to re-wet, you may find it easiest to water them by placing in a 1.5-2" deep saucer and letting them suck up the water over 1/2 a day. I know some folks here are terrified of saucers, but for me, its the way to keep them hydrated when its 96F and 20% RH. In the summer months all of my potted citrus is sitting in saucers. All get a good dose of water every other day - AND - sit in a saucer until they suck up all the water. And they are perfectly healthy. Oh, and once a week foliage pro or other high N food + vinegar does the trick. Note that i use vinegar at a bit less than 1 Tbsp per gallon (same rate as liquid food). Check your irrigation water pH - mine is 9.4 - hence vinegar is the ticket. - good luck! - George
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Nathan Morgan
Original Author
2 years ago
I have no idea, how can u udentify it?
Nathan Morgan
Original Author
2 years ago
i a pretty sure it is fortunella japonica, it was an impulse buy from a lowes
poncirusguy6b452xx
2 years ago
last modified: 2 years ago
Nagam's are the only kumquat findable at big box stores. They are easy to graft and grow on any rootstock. Kumquats are not particularly easy to grow but are quite manageable
poncirusguy6b452xx
2 years ago
last modified: 2 years ago
This is mine after losing 1/4 of leaves .

It has yellow veining leaves that have since dropped.
ken_adrian Adrian MI cold Z5
2 years ago
is that dirt or media the plant is in ...

has the media failed.. when was the last time it was changed ..

how do you water.. does water flow freely thru the media???

you havent given us much to think about.. other than a few yellow leaves ..

is is not uncommon for plants to shed some leaves in winter.. so it might all be normal ... or within normal limits as they might say ...

you said you brought it in because it got to cold outside.. could it have been cold damaged before you brought it in???

ken
poncirusguy6b452xx
2 years ago
It came in before any hard frost and has lost the expected amount of leaves. It is potted in 5-1-1 mix in the bottom 1/3 followed by 4-2-1 in the top 2/3. The mix is 1.5 years old freshly made. It will get transplanted in about a year with a new similar mix. I soak the plant every month to insure total saturation and water when needed between soakings. Just showing that winter leaf drop is normal when growing out of zone.

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