Can anyone tell me what is wrong with my Thuja Green Giants?
DrummerBoy
12 years ago
The shrubs have been in the ground for 2.5 years. Seems it has been a constant battle keeping them alive. We were told they had spider mites (although I've never seen any when I have done the white paper test), so I've been treating them with Bayer 3in1 Insect, disease and Mite control concentrate about every 2 weeks.
We see lightened color at the tips of the leaves, we see yellowing/dead foliage quite often as well. They ARE growing well - lots of new foliage and they've grown about 2 feet this past year.
Can anyone tell me what might be wrong with these shrubs? I was under the impression they were disease and insect resistant but it has been nothing but a struggle with these trees and I've got too much invested to lose them now!
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johnplace
12 years agonoki
12 years agoRelated Discussions
Has anyone in Southern Calif. planted a Green Giant Thuja?
Comments (6)I planted one GG last year in Z8 Texas with drought of about 23" of rain for the year, no growth visible. This year is much wetter, and it has grown about 6". My impression is that it will do ok here once established but will not provide the advertised 3-4 ft. yearly growth. We have several 5 yr. old Leyland Cypress that suffered die-back and we watered to save those remaining. Saw several Leyland die last year in other settings around here. 23" rainfall is insufficient for them. Don't think they will survive well with much less than 32"/yr. How much rainfall do y'al get? Have you considered Arizona Cypress or Eastern Red Cedar? They are both able to survive on 23" of rainfall and make a nice screen....See MoreCan anyone tell me what's wrong with my tomato plant?
Comments (2)Unfortunately I think you're right, everything I've searched for so far points to herbicide damage. It's completely my own fault too I think. I thought I was careful and and was avoiding drift. Thanks for the sites though they're really helpful. I still can't figure out if my plants are salvageable or if I should tear them out and plant new. I don't want to keep growing them if they've been permanently damaged or unsafe to consume....See MoreCan anyone tell me what is wrong with my peonies?
Comments (6)I'm not really sure what kind of peony you have but you can always bring a picture of it to your local nursery. They will be able to help you identify it. As for whether or not something is wrong with your peony, your peony looks okay to me. Sometimes when it's too hot and there is no rain, the buds may shrivel up. This has happened to me many times, I end up picking the buds off and my peony is okay the following year. I would try to clear the area around your peonies. There seems to be a lot of little plants growing inside and around the stems. When there isn't enough air circulation, peonies can develop gray mold or bortrytis. I would then try to clear away some of the dirt around the stems. Peonies should not be planted more than 2 inches deep. Otherwise, they won't flower. I would add some bonemeal or Neptune's Sea Harvest around each of the peony plants. Stay away from the artificial type fertilizers, they can do more damage than good. Lastly, get some peony rings to support the leaves. I wouldn't cut the leaves off unless there was a disease. Peonies, like other plants, need their leaves to photosynthesize food in order to develop a strong root system. Peonies are hardy plants and can live for up to a 100 years given they are planted in the right conditions. Good luck!...See MoreCan anyone tell me what's wrong with my rubber tree?
Comments (4)It’s normal to lose some of the lower leaves - they age out, or they get shaded out and the plant sheds them as they no longer do enough photosynthesis. Usually the rate of loss is less than the rate of replacement by new leaves but it sounds like you’re losing more than that. Maybe watering every three weeks is not enough, you may be stressing your plant too much. Of course it depends on the plant the soil the season the pot size etc etc, but my one dries down in 7-10 days and then I water it thoroughly and drain it well. Then wait again to dry down, as judged by the weight of the pot and/or whether a skewer inserted down to the bottom shows moisture. Read up on soils and watering on this forum, I think that’ll help. Don’t think it’s a disease. Could be rootbound though, looks a small pot for its size. Which will make it go through water faster too. I agree give it bright light....See More
gardener365
12 years agoDrummerBoy
12 years agoken_adrian Adrian MI cold Z5
12 years ago
whaas_5a
12 years ago
dcsteg
12 years agowhaas_5a
12 years agojaing314
12 years agorafaelitopz
7 years ago
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