HELP w/ Photinia - Leaf Spot Disease
jreincke
18 years ago
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rhizo_1 (North AL) zone 7
18 years agogardengal48 (PNW Z8/9)
18 years agoRelated Discussions
Help ID grass disease - dollar spot?
Comments (3)>"My lawn is looking great since I took control of it " HE!! YEAH, atta boy Chris, it looks fantastic! I'd say leaf spot. Refer to this link - http://www.ces.purdue.edu/extmedia/BP/BP-103-W.pdf >"We've had a bit of rain lately" That would be the cause along with warm, humid evening temps. >" Worth treating or let it ride out? " Tough call, Chris. * You more than likely will loose those blades, yes. * If the weather continues to be warm, it will spread by mowing. (wash out the undercarriage of your mower!) On the other hand ... * It is cooling down and the evening are beautiful. Less/no chance for fungal problems. * September and October are optimal growing times (when well feed) so the KBG will repair itself. * A bag of Heritage G from Lesco is expensive, about $80 http://www.syngentaprofessionalproducts.com/pdf/labels/SCP1323AL11108.pdf As it cools down, lower your mower slowly. This will help dry the grass now in fall. With the lowering sun's angle in fall, the shorter grass allows the sun to keep the soil from being shaded, keeping the grass warm, dry and growing. By last cut and last fertilizer drop (Thanksgiving?) aim for +/- 2.25 - 2.5 inches tall. Then in spring, with the shorter cut and last fertilizer drop in autumn, the sun can warm the soil easier, allowing the grass to green up sooner and easier. Spring will bring damp and wet conditions again, and again the shorter grass can dry out easier to prevent future fungus problems. Then as it warms ... just do it again - grow a beautiful lawn again like you just did this year! Hats off to you!...See MorePhotinia serrulata (Chinese Photinia)
Comments (3)I absolutely love this shrub (Photinia x fraserei "red tip") Locally, it is usually not sold around me (or grown in gardens). Don't think growers realize how cold hardy they really are (should be perfectly hardy at least into 6b). Several years ago, I purchased one I happened across one in a local nursery. This shrub just took off in the ground--unbelievely fast growth! It went from maybe a foot to over nine feet in a matter of a few years despite regular pruning and without fertilizing! It grow WIDE horizontally as well with foliage all the way down to the ground. I pruned it fairly heavily every spring and again (more lighter) in the summer. In fact, I recently moved into another house and wanted to replace all the half-dead, old privet hedges. I have planted a row of Photinia along side the privet with the intention of creating a formal hedge of photinia. I have never seen any leaf spot on it (nor has it ever shown any winter burn). Though I don't live in the South, humid and wet weather here is common. If leaf spotting is a concern, I wonder if you could spray something on it to discourage the problem. Good luck!...See Morespots on photinia...help!
Comments (5)The fungicide for photinia leaf spot serves a protective purpose. In other words, it protects new growth from becoming infested. I'd say that the nurseryman you spoke with was being rather dramatic when he said the trees would die in several years. Here in the PNW, photinia are affected every year. And I would suspect the NW infections are more extensive thn those in your region, simply because our climate is more wet than yours. Our photinia trees/shrubs live many years in spite of the problem, although I must admit that they can look rather nasty if in a site favorable to infetion.. In OR, the suggested sprays for homeowner use are any of these: Daconil; Hi-Yield Vegetable, Flower and Ornamental Fungicide; Immunox; Systemic Fungicide (ferti-lome); or Rose Pride Funginex. Because the trees are so important to you, consider hiring a certified arborist to spray because they have equipment you don't. Look for a certified arborist in the Yellow Pages under the heading of Trees or Tree care. Companies that have a certified arborist say so in their ad. The appropriate time to spray is in early spring when the new shoots are developing. In oher words, protect new growth from becoming infected. Also useful for limiting infection are good air circulation (thinning the trees might help); keeping the leaves as dry as possible; and full sun exposure. Also remove and destroy affected leaves....See MoreTomato Leaf Curl, Yellow Spots, Yellow Leaf w/ Brown Spots
Comments (8)The plants in self-watering containers and in 5-gallon grow bags are both exhibiting the leaf roll. However, I do have 2 5-gallon grow bags that have plants in partial shade which do not exhibit leaf roll and are just as big, if not bigger, than those in the self-watering containers. I'm thinking the leaf roll may be root stress related. Either the 5-gallon containers/bags have become too small, the container gets too hot thus stressing the roots, or the potting soil has finally compacted and isn't delivering enough oxygen to the roots. I have tomato plants in raised beds as well and I haven't noticed any leaf roll with them. I have noticed a few had yellowing leaves w/brown spots (3rd picture), however....See Morejreincke
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13 years agogardengal48 (PNW Z8/9)
13 years agonativetexas
7 years agolast modified: 7 years agogardengal48 (PNW Z8/9)
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6 years agoByron Harris
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