Why are my orange tree leaves turning yellow on the tips?
dreamindecor
13 years ago
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thisisme
13 years agoagility_mom
13 years agoRelated Discussions
Why are my plant's leaves turning yellow and brown???
Comments (24)Plants don't age in the same way we think of people aging. Age in people is a described on a chronological basis, where plants age ontogenetically. This might be framed as, the parts that have taken the most cell divisions to produce are the plant's oldest parts; so strangely, the most recent part of the plant (say, a new branch high on the plant) to grow is the oldest part of the plant. The youngest part of the plant will be found in the root to shoot transition zone. This juvenile part of the plant is also nearly always the most vigorous part of the plant. Plants pass through life stages until they end up at the sexually mature stage. At that point they are capable of blooming/fruiting. Whether they DO or not is complicated and not entirely understood. Blooming and other environmental reactions of most healthy plants are primarily influenced by day length (technically it's night length), but more than a few plants are triggered by other factors, like moisture availability, temperature, predation. Some plants even seem to have an internal 'alarm clock' that acts as a trigger to bloom. There are species of bamboo that bloom as infrequently as every 130 years and when the bloom occurs, all plants of a given genetic origin bloom simultaneously, en masse (all at once), and this occurs regardless of environmental influences. Now, that a plant is capable of blooms/fruit doesn't mean it will produce same, no matter how much we hope. The factors that limit a plant's ability to bloom are as complicated as those that trigger blooming. The plant's internal chemical messengers that limit blooming is first influenced by the plants ontogenetic age, but then by health, stress, stored energy reserves, a significant number of environmental factors, and sometimes seemingly no more than a built-in piqued obstinacy that can be more irritating than Justin Bieber or the Kardashians, if that's even possible. How do I get it to bloom? Keep it healthy and let it do its thing. You can search online - there might be some simple ways to coax it to bloom exactly whenever it feels like it. How old does it have to be? The only age important to plants is what growth phase they're in. They have to be old enough chronologically to have reached sexual maturity. This is also complicated because the (ontogenetic) age of the parent plant from which the propagule (that is now your plant) was taken has to be a part of the equation. Example - a hawthorn tree from seed needs to survive around 20-25 growth cycles to bloom; whereas, a cutting from a blooming hawthorn tree can be counted on blooming within a few years if its state of vitality has been generally good. Al...See MoreWhy are some leaves on Maple tree turning yellow in July?
Comments (2)In other words, it's suffering from nitrogen deficiency. Problem right now is it's too risky to apply chemical fertilizers. Instead add an application of blood meal and some compost. In the fall get those tree spikes for your tree....See MoreWhy is my Snow Mountain Hydrangea Tree leaves turning yellow?
Comments (17)cjsm, thank you so much for the follow-up. I am hearing rather conflicting messages from different people though - my local nursery people told me to keep on watering, since this is a new tree and the root system is not well-developed yet. On the other hand, I hear what you are saying and the overwatering theory in clay soil (which I also have) definitely makes sense! I think I am going to stop watering it for a few days and see what happens. You know, it's hard when you see the leaves drooping in the strong afternoon sun and still not water it! At least it is getting cooler around here these days... BTW, cjsm, my tree was planted in a big planting hole on a slope, and I had plenty of cow manure and things amending the local clay soil, so I think I don't need to take it out to raise it more. I hope this does the trick! Thank you again for your info....See MoreOrange tree leaves turning yellow n curling....
Comments (3)In my opinion, you may have up to three problems at same time. Too much fertilizer, too much soil moisture and sunburn. If I were you, I would start again with a porous soil (search for "5-1-1 mix"), don't fertilize and no direct sun for a time. When temperatures reach 35º C, move to a cooler site. When you see new growth, you can return to a standard fertlizing schedule and sun light. I recommend starting with half strength of a soluble fertilizer....See Moredreamindecor
13 years agoaztreelvr
13 years agothisisme
13 years ago
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