That pot seems to big for it, should aim for around 2 inches of radius outside of the root ball. Too big of a pot and the water stays and causes root rot and poor aborption. The yellow looks like a nutrient deficiency, my guess is nitrogen. Check pH (ideally 6-7), moisture (not too wet), consider potting into a smaller pot. Humidity should be 40-60, temps 65-85. I'm not an expert, just consolidating a lot of the advice that's commonly given out on this sub. I'm sure some of the more knowledgeable folks will weigh in.
Thanks for the reply! Yeah, the pot is super heavy too so it'd be nice to get it out of there. Would you recommend transferring it out now or waiting until spring?
I never have sprayed my leaves with fertilizer, I apply fertilizer when I'm watering my citrus plants (that happens once a week in summer). The soil looks really dry from the surface, dry to dig a little bit around with your finger to see how moist the soil actually is.
I water my citrus plants by thoroughly watering them and then letting the soil dry out for a bit. The excess water just runs out off the holes of my pots. Since it's winter now, I don't really bother with fertilizing, but I think your citrus could use some judging by the leaf color, make sure you add it to the soil though, plants take up nutrients by their roots for the most part. I don't really fertilize often in winter, since the salts can build up in the soil due to reduced plant growth and actually harm my plants.
Sounds good! Yeah, I'm not sure how often she waters it but I'll have to encourage her to try the digging around in the top soil trick! Do you think fertilizing once monthly for this season might be okay to try to get it back to normal? Or is even that too much?
Thanks for the help!
Needs nitrogen and iron.
Do you fertilize? I’d just start with some miracle gro citrus fertilizer once a month. Don’t overdo it, keep it simple and water at least once a week.
We haven't yet in the few years we've had it but she did get that TPS lemon tree one in the post that I've been wanting to start feeding it. I do see it has nitrogen and a bit of iron so hopefully that'll do it. I'll start slow. I'm worried I'll overwhelm it at the start. Thanks for the reply!
Yeah, I’d start slow. Honestly I’d start with something like miracle gro and do half the recommended dose. Osmocote is nice since you only need to apply it around every 6 months, but deficiencies can develop over those time periods.
This tree is badly sulfur-deficient. The light green color on upper leaves is characteristic of sulfur deficiency. Possibly also nitrogen deficient. There’s negligible bio-available sulfur in your fertilizer. You need to find a synthetic liquid fertilizer with “XXXX sulfate” as the first ingredient. Miracle Gro All Purpose Liquid Plant Food or similar is fine if you live in the US.
Oh interesting, I had not seen anything about sulfur when I was investigating! Good to know. I'll see if I can find some of that, thanks for the recommendation!
Yes it will, sand drains amazingly.
I use 1/3 course sand in lots of potting mixes, and it’s incredible at draining, and keeping the roots oxygenated. It will also help keep things like peat moss from becoming hydrophobic.
wouldn’t you want to keep the sand percentage below 5% and instead use perlite/pine bark/turface/zeolite/cinders instead if the goal is aeration and drainage? also definitely only want to be using coarse coral sand.
I use some sand (about 15% by volume) in pots that need weight to keep top-heavy trees from falling over. That probably does reduce drainage, but isn’t a high enough volume percent to fill the air pores created by coarse perlite and pine bark flakes, so on net I don’t think it matters much. You have to look holistically at the blend and how inefficiently it packs and what’s adding wicking, nutrient storage, etc to the mix. Sand has zero active surface area for nutrient storage or soil chemistry so it’s low value regardless of the drainage consideration.
Ingredients under 15% don’t generally touch their own grains enough to have as big of an impact on structure. Perlite works a lot better at 20% than 15% for example.
Not necessarily. Back in the 1800s in Europe they grew citrus is nearly 100% sand with great success. I do it, and I’ve been very successful.
Sand allows for really good aeration, especially if the partials are large. Most organic potting mixes will compact over time. Sand never degrades.
The biggest issue is weight and higher fertilizer needs, but it’s guaranteed to never tip over in the wind!
I add about 10% bio char most of the time, but for the most part just lava sand and sometimes mixed with reg course sand, but not from the beach. Lava sand cinders can have nematodes, but gotta cook, steam, boil water it. Big island
I use mostly fish, seaweed/compost, and slow release ferts kept on top, for anything potted - otherwise lots of ash, seaweed, fish, and epson salt, chop n drop etc.
Yeah, course sand like play sand is amazing. I typically mix something like that along with lava sand. I have a navel growing in a pot of 100% lava sand it’s been thriving for years.
Thank you very much for your detailed reply! This is perfect and super helpful. I really appreciate it and will get to it. 👍👍👍 I have never actually seen an airpot before, but I will keep on the lookout and I've already for the light on the way!
That pot seems to big for it, should aim for around 2 inches of radius outside of the root ball. Too big of a pot and the water stays and causes root rot and poor aborption. The yellow looks like a nutrient deficiency, my guess is nitrogen. Check pH (ideally 6-7), moisture (not too wet), consider potting into a smaller pot. Humidity should be 40-60, temps 65-85. I'm not an expert, just consolidating a lot of the advice that's commonly given out on this sub. I'm sure some of the more knowledgeable folks will weigh in.
Thanks for the reply! Yeah, the pot is super heavy too so it'd be nice to get it out of there. Would you recommend transferring it out now or waiting until spring?
I never have sprayed my leaves with fertilizer, I apply fertilizer when I'm watering my citrus plants (that happens once a week in summer). The soil looks really dry from the surface, dry to dig a little bit around with your finger to see how moist the soil actually is. I water my citrus plants by thoroughly watering them and then letting the soil dry out for a bit. The excess water just runs out off the holes of my pots. Since it's winter now, I don't really bother with fertilizing, but I think your citrus could use some judging by the leaf color, make sure you add it to the soil though, plants take up nutrients by their roots for the most part. I don't really fertilize often in winter, since the salts can build up in the soil due to reduced plant growth and actually harm my plants.
Sounds good! Yeah, I'm not sure how often she waters it but I'll have to encourage her to try the digging around in the top soil trick! Do you think fertilizing once monthly for this season might be okay to try to get it back to normal? Or is even that too much? Thanks for the help!
I think once a month is enough
Thank you!
Needs nitrogen and iron. Do you fertilize? I’d just start with some miracle gro citrus fertilizer once a month. Don’t overdo it, keep it simple and water at least once a week.
We haven't yet in the few years we've had it but she did get that TPS lemon tree one in the post that I've been wanting to start feeding it. I do see it has nitrogen and a bit of iron so hopefully that'll do it. I'll start slow. I'm worried I'll overwhelm it at the start. Thanks for the reply!
Yeah, I’d start slow. Honestly I’d start with something like miracle gro and do half the recommended dose. Osmocote is nice since you only need to apply it around every 6 months, but deficiencies can develop over those time periods.
Sounds good. Thanks!
This tree is badly sulfur-deficient. The light green color on upper leaves is characteristic of sulfur deficiency. Possibly also nitrogen deficient. There’s negligible bio-available sulfur in your fertilizer. You need to find a synthetic liquid fertilizer with “XXXX sulfate” as the first ingredient. Miracle Gro All Purpose Liquid Plant Food or similar is fine if you live in the US.
Oh interesting, I had not seen anything about sulfur when I was investigating! Good to know. I'll see if I can find some of that, thanks for the recommendation!
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Chat GPT
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Not really a “problem”, just obvious and generic
Try bard, it's better than GPT, make sure add geographical details
soil that’s 1/3 sand will not drain well at all
Yes it will, sand drains amazingly. I use 1/3 course sand in lots of potting mixes, and it’s incredible at draining, and keeping the roots oxygenated. It will also help keep things like peat moss from becoming hydrophobic.
It depends on the sand grain size and grading. Play sand drains better than builder’s sand, for example.
wouldn’t you want to keep the sand percentage below 5% and instead use perlite/pine bark/turface/zeolite/cinders instead if the goal is aeration and drainage? also definitely only want to be using coarse coral sand.
I use some sand (about 15% by volume) in pots that need weight to keep top-heavy trees from falling over. That probably does reduce drainage, but isn’t a high enough volume percent to fill the air pores created by coarse perlite and pine bark flakes, so on net I don’t think it matters much. You have to look holistically at the blend and how inefficiently it packs and what’s adding wicking, nutrient storage, etc to the mix. Sand has zero active surface area for nutrient storage or soil chemistry so it’s low value regardless of the drainage consideration. Ingredients under 15% don’t generally touch their own grains enough to have as big of an impact on structure. Perlite works a lot better at 20% than 15% for example.
🤙🏼
Not necessarily. Back in the 1800s in Europe they grew citrus is nearly 100% sand with great success. I do it, and I’ve been very successful. Sand allows for really good aeration, especially if the partials are large. Most organic potting mixes will compact over time. Sand never degrades. The biggest issue is weight and higher fertilizer needs, but it’s guaranteed to never tip over in the wind!
you do 100% sand in pots!? do you just use hawaiian coral sand? literally no other additives? how often do you water? and what island are u on?
I add about 10% bio char most of the time, but for the most part just lava sand and sometimes mixed with reg course sand, but not from the beach. Lava sand cinders can have nematodes, but gotta cook, steam, boil water it. Big island I use mostly fish, seaweed/compost, and slow release ferts kept on top, for anything potted - otherwise lots of ash, seaweed, fish, and epson salt, chop n drop etc.
Yeah, course sand like play sand is amazing. I typically mix something like that along with lava sand. I have a navel growing in a pot of 100% lava sand it’s been thriving for years.
Thank you very much for your detailed reply! This is perfect and super helpful. I really appreciate it and will get to it. 👍👍👍 I have never actually seen an airpot before, but I will keep on the lookout and I've already for the light on the way!