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Author Topic: Lemon tree help -yellowing leaves  (Read 241 times)

Siren

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Lemon tree help -yellowing leaves
« on: November 29, 2019, 11:08:01 AM »
Hello everyone!
New here from Ontario, Canada. I currently own two citrus a 6 year old Meyer Lemon tree and 3 year old Caladomin ( Iím such a proud citrus tree mom lol).
So I have owned my lemon tree for three years last year was my first fruit set and this year from circumstances I didnít have my tree all summer until fall. My lemon had 5 growing fruit - 3 fell off and 2 are still on the tree..

Currently with good fertilizer and watering schedule, and micro folier spray itís dropping all its leaves and turning yellow.. It never really grew new leaves this summer. Itís still flowering and holding onto two medium size fruit now. No root rot and Iím unsure what the problem could be..Soil/drainage,Light, watering? It was fine last year but hurting this year and it has no bugs (treated with neem oil to be safe)
Also ďMilletĒ can you recommend a good grow light for my tree?? Brand, type, wattage? Thanks

I have more pics of previous years too.




Millet

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Re: Lemon tree help -yellowing leaves
« Reply #1 on: November 29, 2019, 03:09:58 PM »
To try to get a hold on the situation.

How long has the tree  peen planted in this same medium?
What fertilizer are you using to feed this tree?
How often do you fertilize the tree?

Siren

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Re: Lemon tree help -yellowing leaves
« Reply #2 on: December 01, 2019, 10:35:40 AM »
The tree was outside this summer , and didnít grow any leaves. It wasnít fertilized at all over the summer but was in a June with Citrus tone.
As of Sept it was fertilized with Grow Scripts. It was healthy and had new soil and pot in June (than again in October when my pot was hit by the gardener and cracked.
I used orchid bark and tropical soil mix from Fanfard, with added clean sand. I have been using grow scripts folier spray as well.
I did notice my pot is not draining and holding water.
Going to try find your mix of garden soil Miracle Grow and perilite today. And replant again.

Should I remove the two fruit and flowers ? Was wondering if all the energy is going to them.
Looking to buy 2 -T5 bulbs to supplement the light as well.
Thanks for your time

Millet

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Re: Lemon tree help -yellowing leaves
« Reply #3 on: December 01, 2019, 01:34:26 PM »
It is easy to determine the difficulty your tree is having.   No fertilizer all summer is not a good situation. without fertilizing the tree certainly will become deficient of the vital minerals required, thus is incapable to producing any growth., Using an organic fertilizer in a container, such as Citrus tone, is also not a good situation.  Organic fertilizers require microorganisms to break down the organic fertilizer to make it usable to the tree.  Container mediums do not have the microorganisms required to accomplish this.  Be careful purchasing Miracle grow as the product is different in different parts of the country.  A 50/50 mix of Turface and Miracle Grown Garden Soil is also a very good medium for container culture.  Miracle Grow Garden soil is different than plain Miracle grow  potting soil.  Also a 5-1-1 or a 5-2-1 mix is a good medium. I would recommend using a conventional fertilizer with higher levels of nitrogen and potassium and a smaller concentration  of phosphorous plus with trace minerals. Good luck to you and this tree.

lebmung

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Re: Lemon tree help -yellowing leaves
« Reply #4 on: December 01, 2019, 04:55:53 PM »
An appropriate rootstock for Meyer lemon would have partially solved the problem. Climate and potting mixture for containers play a role here. I am afraid the nurseries have no interest to sell hardy citrus plants that can last tens of years, they would be out of business. Plus competition drove the price down so everybody is hurrying up production. How many years they need to grow a FD to graft and sell it, especially in colder climates.
« Last Edit: December 01, 2019, 07:01:37 PM by lebmung »

CanadianCitrus

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Re: Lemon tree help -yellowing leaves
« Reply #5 on: December 01, 2019, 06:38:00 PM »
Siren,

I two am an indoor(during the winter months) citrus grower in Canada. Millet’s 5-1-1 soil mixture is a GAME CHANGER. I recommend a VERY fast draining soil. Fast draining soil for us Canadians is a must. Our temperatures don’t run as high and also with the furnace blasting all winter It will do funky things to the plants. I have had a bunch of my plants die over the last few years when I move them into my basement for the winter. If you give your plants enough light they will continue to flush with new growth all winter.

I switched to 5-1-1 about a month or so ago and it was the best decision. I legit can’t overwater my plants.

As for lighting, nothing is gospel but I can tell you my experiences. Fact: Canadian sun light is short in the winter. Fact: Canadian sunlight is weak in the winter. Fact: Canadian winter is long.

I have used compact fluorescent as well as some use of T5 bulbs. The results had been shockingly underwhelming. The rule of thumb for wattage for a grow light is 35-50 watts per square foot of growing space. Fluorescent bulbs just don’t pump out enough juice to make it worth the squeeze. In my humble opinion the move to a full spectrum LED would be the best option. Unless you want to go to a metal halide. But for the hours it would need to run in a Canadian winter the cost of running might be crazy expensive.

Thanks!

lebmung

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Re: Lemon tree help -yellowing leaves
« Reply #6 on: December 01, 2019, 07:09:41 PM »
Ontario is on same latitude like me, well maybe a bit colder. I have also -10 to -15 C on some nights.
Citrus should grow well enough without spending lots of money on LEDs and heating.

Siren

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Re: Lemon tree help -yellowing leaves
« Reply #7 on: December 02, 2019, 06:06:05 PM »
Thank you everyone
I am going to purchase a small T5 to help supplement light.
I am going to repot in Miracle Gro Garden Soil and perlite
With Fanfard orchid bark. And see if better drainage helps. Along with my
Fertilizer from Grow Script.

Orchid mix contains: Western bark mini-nuggets, coconut husk chunks, limestone






Siren

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Re: Lemon tree help -yellowing leaves
« Reply #8 on: December 02, 2019, 06:09:36 PM »
CanadianCitrus:
What brands do you use in your 5-1-1 soil mix ?
Thanks
« Last Edit: December 02, 2019, 09:28:29 PM by Siren »

Siren

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Re: Lemon tree help -yellowing leaves
« Reply #9 on: December 03, 2019, 01:17:47 PM »
Changed my mind Iím going to use Miracle grow garden soil and hydroton (Leca)
Anyone use the clay beads thing?  Is this the same as Turface @Millet?

Vlad

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Re: Lemon tree help -yellowing leaves
« Reply #10 on: December 03, 2019, 02:31:30 PM »
Can cat litter be a good subsitute for Hydroton?

 

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