Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
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Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy was created by a1872
Posted 8 months 1 week ago #84427
Hi. I have a Ficus Microcarpa and leaves turn yellow, I cut the yellow leaves off, and other leaves then turn yellow, and again I cut them off.? If I keep doing this, there will be no more green leaves to photosynthesize.? The new leaves are yellowish in color--if the leaves were green, I don't think this would be a problem.? I think the Ficus is supposed to lose leaves over time and not all at once--but the new leaves are yellow, which I think are damaged.? I read that yellowing is a sign that there is a nutrient deficiency or watering problem.? To water and fertilize, I mix SuperThrive 名媛直播 Pro--which has a ratio of 7:9:5 with water.? I also spray the leaves with water a couple of times a day.? So, I was wondering if this is a cause for concern, and the cause and remedy for this situation, if there is a problem.? Thanks.
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Replied by Tropfrog on topic Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
Posted 8 months 1 week ago #84428
Ficus do shed more leafs and produce less new in authum and winter if kept in livingroom conditions in temperate regions. If you are in the southern hemisphere going into spring now or in a tropical climate, obviously that answer do not apply.
The new growth on your tree is normal light green. I see no issue with them and they will green up by time. If you are in a nortern temperate region it will take time. Maybe even until spring depending on how long north you are. If you are getting into winter, the authum equinox is passed now and you should stop or reduce the fertilizer depending on latitude.
You can reduce leaf drop in winter with one or more of the following actions. Reduce temperature to 10c. Increase humidity by putting it into a terrarium, grow tent or greenhouse. Add articicial light.
As you can see location, growing conditions and climate plays a role. Next time asking a question, please give that information as it will be much easier to answer without all ifs.
Anyway, to answer your main question. Is there any reason for concern. There are never any reason for concern in bonsai. Concern never helps the tree and stresses the owner. Quite often it leads to drastic actions that makes things worse.
The new growth on your tree is normal light green. I see no issue with them and they will green up by time. If you are in a nortern temperate region it will take time. Maybe even until spring depending on how long north you are. If you are getting into winter, the authum equinox is passed now and you should stop or reduce the fertilizer depending on latitude.
You can reduce leaf drop in winter with one or more of the following actions. Reduce temperature to 10c. Increase humidity by putting it into a terrarium, grow tent or greenhouse. Add articicial light.
As you can see location, growing conditions and climate plays a role. Next time asking a question, please give that information as it will be much easier to answer without all ifs.
Anyway, to answer your main question. Is there any reason for concern. There are never any reason for concern in bonsai. Concern never helps the tree and stresses the owner. Quite often it leads to drastic actions that makes things worse.
Last Edit:8 months 1 week ago
by Tropfrog
Last edit: 8 months 1 week ago by Tropfrog.
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Replied by a1872 on topic Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
Posted 8 months 1 week ago #84431
Hi--thanks for the answer.? Yes, I live in Missouri and am moving into winter; so you are saying to disregard the makers of SuperThrive 名媛直播 Pro instructions and mix water and the fertilizer different from what they state--one teaspoon for half-gallon of water?? After spring arrives, I can return to the makers instructions?? Thanks.
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Replied by Tropfrog on topic Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
Posted 8 months 1 week ago #84434
I do not fertilize any plants in winter. Cactus enthusiasts do not fertilize in winter, orchid growers do not fertilize in winter, farmers do not fertilize in winter. So that is a quite common regime for any growers. The only growers I know fertilize in winter are those working with extream grow lights to simulate summer or tropical conditions. Terrarium hobbyists or illegal herb growers.
Your fertilizer manufacturer may not like it, but it is still a fact that plants metabolism is dependent on sunlight and that fertilizer may build up to toxic levels if you continue fertilize when uptake is low.
Your fertilizer manufacturer may not like it, but it is still a fact that plants metabolism is dependent on sunlight and that fertilizer may build up to toxic levels if you continue fertilize when uptake is low.
Last Edit:8 months 1 week ago
by Tropfrog
Last edit: 8 months 1 week ago by Tropfrog.
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Replied by a1872 on topic Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
Posted 2 weeks 3 days ago #85671
Hi.? It's been a long time since this post.? I have the Ficus microcarpa under a grow light and was thinking of getting a Japanese Red Maple for the bright color and read this quote from the Maple page:
Subtropical tree species are usually kept indoors and don't experience seasonal changes. They grow year-round and need to be fertilized consistently. For indoor 名媛直播, we recommend a balanced liquid fertilizer. Follow the guidelines as stated on the product packaging.
Your post:I do not fertilize any plants in winter. Cactus enthusiasts do not fertilize in winter, orchid growers do not fertilize in winter, farmers do not fertilize in winter. So that is a quite common regime for any growers. The only growers I know fertilize in winter are those working with extream grow lights to simulate summer or tropical conditions. Terrarium hobbyists or illegal herb growers.
Since my tree is under a grow light, so there's plenty of sunlight and metabolism, should I be using the full amount of fertilizer?? I was halving it during winter, but it is Spring now and the bonsai is fine.
Subtropical tree species are usually kept indoors and don't experience seasonal changes. They grow year-round and need to be fertilized consistently. For indoor 名媛直播, we recommend a balanced liquid fertilizer. Follow the guidelines as stated on the product packaging.
Your post:I do not fertilize any plants in winter. Cactus enthusiasts do not fertilize in winter, orchid growers do not fertilize in winter, farmers do not fertilize in winter. So that is a quite common regime for any growers. The only growers I know fertilize in winter are those working with extream grow lights to simulate summer or tropical conditions. Terrarium hobbyists or illegal herb growers.
Since my tree is under a grow light, so there's plenty of sunlight and metabolism, should I be using the full amount of fertilizer?? I was halving it during winter, but it is Spring now and the bonsai is fine.
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Replied by Tropfrog on topic Ficus Microcarpa; yellowing of leaves; Cause for concern?; Cause and remedy
Posted 2 weeks 3 days ago #85673
There is something wrong in the text you quoted. Subtropical climate has seasonal changes in temperature and most trees from subtropical regions do experience seasonal changes. It is tropical regions that do not experience much of seasonal change in temperature. However, most of them do experience seasonal shange in presciptation and humidity.
If you need to fertilize or not is depending on growth. If your tree grows you need to fertilize. Light fuels growth. So in the end if you need to fertilize If your light is strong enough to create growth. I doubt it. I doubt that you have "plenty of light".? Not many beginners understand how much light is really needed for plants that naturally grow under unrestricted sun. Not many beginners understand what it takes to keep plants alive indoors under artificial light that is even half the streangth of the sun when it comes to controlling temperature and humidity. Our planet is quite amazing in how it can sort out the heat in the atmosphere and let most of the usable light throe.
You are not planning to grow red maple indoors, are you? If so, just give up that idea. Maples is temperate trees that need winter dormancy to survive.
?
If you need to fertilize or not is depending on growth. If your tree grows you need to fertilize. Light fuels growth. So in the end if you need to fertilize If your light is strong enough to create growth. I doubt it. I doubt that you have "plenty of light".? Not many beginners understand how much light is really needed for plants that naturally grow under unrestricted sun. Not many beginners understand what it takes to keep plants alive indoors under artificial light that is even half the streangth of the sun when it comes to controlling temperature and humidity. Our planet is quite amazing in how it can sort out the heat in the atmosphere and let most of the usable light throe.
You are not planning to grow red maple indoors, are you? If so, just give up that idea. Maples is temperate trees that need winter dormancy to survive.
?
by Tropfrog
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