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| Planted dwarf winged burning bush last summer. This is it's first spring awakening in my garden. Today it's highly infested with little black bugs hanging in rows attached like eating the plant. From online research they look like black vine weevils. I also found some of the little white grubs in the roots when I pulled plant up and carefully disposed of it. I'd rather not deal with any shrub that tends to infestation like this.
This is my question: What should I do to the soil in that spot to maybe kill bugs and grubs left behind. Is a general ortho 150 bug killer type of stuff good? I just looked online and saw some info that said spraying insectisides into the earth doesn't do much good. Should I do any thing to the soil to try to kill the remaining bugs? I'm thinking of putting a nandina in the same spot now. Is that resistant to black vine weevil? Thanks!
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Follow-Up Postings:
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| Any chance of pictures of the critters? Certainly would help us help you. |
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- Posted by ken_adrian z5 (My Page) on Fri, Apr 29, 11 at 7:26
| the plants gone jean ... in my world.. either leave the spot blank for a year .. or throw in some annuals ... and be done with it ... chemicals are literally.. overkill ... once the host plant is gone.. again.. in my world.. warped as it may be .... there is a 99.999999% chance.. that the plague went with it ... there is little chance.. that another HEALTHY plant will suffer from the same problems ... but if it does.. that is when you use reactive chemicals ... IMHO .. since you can not ID the problems... with any certainty .. at this time.. any chemical use would be pollution ... bottom line.. you already fixed the problem... so dont fix it again ... ken ps: if you just have to do something... dig out the soil .... wheelbarrow it to another corner of the yard.. and bring some fresh soil back and refill ... new.. fresh soil.. and no chems ... |
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- Posted by gardengal48 PNW zone 8 (My Page) on Fri, Apr 29, 11 at 12:01
| I doubt it is vine weevils - the adult weevils are nocturnal creatures and are not commonly seen during daylight hours. And they tend only to feed on foliage, not stems or other woody parts, and winged euonymus is not even fully leafed out yet in my area so I'd have to wonder what exactly they were munching on in your location. This plant tends not to be bothered much by insect problems, even the scale common to other euonymus. Even in my area, where vine weevils can be a huge problem to some plants, I have never seen them near a winged euonymus. Since you've already disposed of the plants (which, btw, are listed as an invasive species in PA), you need to do nothing else. Nandina - if not also invasive in your area - is a reasonable alternative as it too is not prone to any significant insect problems. |
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