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Buddleia silver anniversary not thriving
Hi, I planted a buddleia silver anniversary in my south facing gravel garden 3 years ago or so. It was doing pretty well but this year seems to be having problems. At first I thought it was the late frost that did it, but it hasn't recovered.
I get the impression the tree is still alive and trying to grow, but something is stopping it!
Any advice welcome. Should I treat for fungus, try a feed, or move the plant to my north-facing back garden? I am a bit confused as I thought buddleias were generally very hardy and didn't need much care!

- Leaves are very narrow looking, they have been turning yellow and brown
- I've tried giving extra water, but then stopped as I thought there might be a root rot problem
- Flowers have been forming, but are much smaller and don't last long
- There are small leaves on the ends of the branches
I get the impression the tree is still alive and trying to grow, but something is stopping it!
Any advice welcome. Should I treat for fungus, try a feed, or move the plant to my north-facing back garden? I am a bit confused as I thought buddleias were generally very hardy and didn't need much care!

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Was it rootbound at all?
Buddleias are indeed very tough, but the cultivated varieties aren't the same as the common one - they still need decent prep to thrive and establish. It's also perfectly normal for them to have some dead/damaged foliage
I live in west central Scotland - not where that photo is...
It was planted around 3 years ago, and looked something like this when I bought it. A lot healthier than now, the leaves have become quite sparse. https://www.cowellsgc.co.uk/product/buddleja-silver-anniversary/?gclid=CjwKCAjwwb6lBhBJEiwAbuVUSvQIV0LBi3wOu45TgGuitNtRY3HVKCuekvJePrdMU_RWSOHM0SUTxBoCruEQAvD_BwE
I don't remember it being rootbound, and it was doing well until this year.
Would you suggest any treatments, or maybe moving it?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
The link also doesn't say what size it was when you got it. A small plant will take a year or two to settle and establish, even with good conditions, and anything planted during summer needs far more attention than when planted in autumn or early spring. If you're in one of those dry parts of the country, it would need attention for a good number of months to ensure success. Even the following year after planting, it would have needed to be checked to see it wasn't drying out for long spells.
I don't have to worry about that here, but even so - last year was extremely dry, and very hot, and new plants, particularly woody shrubs or trees, would have needed more attention to settle them in, so the location and site are big factors.
Too many plants around it can mean a lot of competition for that water - which even buddleias need enough of to establish and thrive. The prep for planting anything is the most important part, and as @Dovefromabove says, what the soil's like also affects the plant's ability to settle in
If everything's leaning to reach light and sun, that tells you they're not in the best site for their needs. Other planting - especially shrubs and trees will affect that, as well as fences/buildings etc.
I live in west central Scotland - not where that photo is...
I live in west central Scotland - not where that photo is...
I hear what you are saying about the conditions being dry at the root level. We are forecast about 10 days of rain where I am, so I will see what I can do to make sure some of that gets to the tree, and water more regularly if things turn dry again.
It seemed to be doing well until this spring (so for about 2 years), and the lavender next to it has done well; I planted that roughly at the same time. But perhaps I should have given it more attention for longer, before assuming it was OK and established
Sounds like it might not be in right place ultimately - I think I will try the watering, see how it fares after the summer and then think about moving it if it recovers.