Should I worry about these lemon tree brown leaves?
Mark
2 years ago
last modified: 2 years ago
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Mark
2 years agoRelated Discussions
Help with Dwarf Meyer Lemon Tree - Brown spots on leaves
Comments (3)Thank you! I did fertilize it with an slow release organic all-purpose fertilizer (10% nitrogen, 2% phosphate, 8% potash, 1.8% calcium, 3% sulfur) when I first repotted it so, so maybe it's hitting the tree now? I was worried that the cause was fungal, overwatering (although I've been very good about not "overloving" my tree) or even some nutrient deficiency/imbalance. Would it be better to leave it be (let the existing fertilizer leach out) or should I "treat" with a citrus fertilizer? Thanks, again, for your advice!...See MoreGetting worried about lemon and tangerine tree
Comments (7)I'm almost positive that's Citrus Leaf Miner damage. And at this point the curled edges tell me they are probably long gone. The CLM adult lays it's eggs outside and the little worm takes about a week to tunnel through the leaf. When it's ready to pupate it will pull the leaf edge around it and make a cocoon. They hatch just a few days later. CLM has a really fast life cycle. Depending the the temperature it can be a week to two weeks from egg to adult. I do sometimes pull the leaf edge back and if i see a cocoon I kill it. If I were you I'd do that now so you don't have any adults hatching inside. But other than that, I would not take off the leaves. Even though they're ugly, they're still doing their job of photosynthesizing food. The crinkles itself isn't catching to the other leaves. I know it's a big temptation to take them off, but don't. You probably won't have any problems with CLM for the rest of the winter as the trees are now inside. Those eggs were laid outside a couple weeks ago. And now that you've sprayed you probably won't get anymore until they go back outside next spring. Then be sure to spray with Spinosad to prevent the adult CLM for laying eggs again. There are usually 2-3 times of CLM activity per season, and they coincide with the growth spurts of the trees, as the CLM adults lay eggs only on the new tender leaves. So if you see new leaf growth when they're outside be sure to spray with Spinosad to prevent the eggs from growing, or use Imidacloprid systemic. Here's a really good page of info on Citrus Leaf Miner; http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74137.html...See MorePortuguese lemon tree, frost damage - should I pick the ripe lemons?
Comments (5)Just wanted to comment about citrus in Portugal. Hope you tree recovers ..Every Year in May for the past 6 yrs my husband and I visited the Algarve. Two years ago we visited a citrus orchard . Manuel the owner is awesome and extremely knowledgeable and even showed me how to graft trees.. He offered me trees but of course cannot import to Canada He has several varities of lemon and I am sure he can help you. He and his Dad wil, treat you like family. Visiting him was a real highlight of our trip. Here is his website Mrfrutus.com. Maggy...See MoreMeyer lemon tree leaves turning brown and dropping
Comments (6)The leaf drop is most likely Winter Leaf Drop (WLD) due to cold roots and leaves getting a lot of light. See: http://tropicalfruitforum.com/index.php?topic=13332.0 Also, in addition to WLD, your soil looks to be too water retentive which means you may have root rot due to wet soil. Moisture meters are not very accurate. You are better off relying on your fingers. Dig about two inches into the soil and feel if it is moist. Or, stick a skewer to the bottom of the pot an pull it out. If you see soil particles sticking to it that means the soil is moist and the plant does not need watering. If you do have root rot, you should repot into 5:1:1 or gritty mix. Here is the recipe of the 5:1:1: 5 parts pine bark mulch (remove ½” pieces through 1/2 inch screen) (Some people use Repti Bark instead of mulch. They do not screen it.) Try to soak the bark overnight. · 1 part sphagnum peat · 1 part perlite (coarse, if you can get it) · 1 Tb garden lime /gal 5-1-1 mix (measure the 5-1-1 mix) · Osmocote plus (follow manufacturer’s instructions). This is optional. · Moisten well and wait at 2 days before using, if possible. If it is salt, fill the pot with water and let drain. Repeat three times....See MoreMark
2 years agolast modified: 2 years agoSilica
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2 years agoSilica
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2 years agoSilica
2 years agolast modified: 2 years agoMark
2 years agoSilica
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