The biggest tree challenge!

in Plants
Hey all. So here’s a good one... I want to plant a row of “something” (tree) evergreen in a tough spot:
1. The area is behind a shed, a strip of land about 10 x 2ft next to a tall fence
2. there is a mature oak tree on the other side of the fence, but it’s canopy is way above the fence line. I essentially want to fill a gap between the fence top and canopy.
3. it’ll get 0 sun until it reaches around 9 feet, even then it’ll be shady most of the time
4. am I asking the impossible :-)
1. The area is behind a shed, a strip of land about 10 x 2ft next to a tall fence
2. there is a mature oak tree on the other side of the fence, but it’s canopy is way above the fence line. I essentially want to fill a gap between the fence top and canopy.
3. it’ll get 0 sun until it reaches around 9 feet, even then it’ll be shady most of the time
4. am I asking the impossible :-)
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You'd need to be vigilant in getting it established too, so that may involve a bit of effort.
Some evergreen shrubs will take full shade too - but you also need to be able to manage anything once it gets to the height you want, as they won't just stop growing. Eleagnus, Laurel etc, but again - it's about getting them established in the first place that's the problem.
That is a hard ask.
Cotoneaster can be wonderful but may grow to be 10 -12ft in diameter.
Pic below shows yellow berried Cotoneaster Rothchildianus...a single shrub.
used to hide our chicken house...in old home.
Red berried one is on a bank in a local car park. It is massive. High and wide.
Maintenance of anything is the real problem I feel.
Do you mean the area behind the shed, between the shed and the fence, right under the oak? Honestly, I think nothing will grow there.
Your best chance for adding some greenery above the shed line and under the oak canopy would be to grow something climbing (or trainable on the fence) on the right side of the shed, where it can get some light, and to train it on the trellis. But it looks like something's already there.
If it was mine, I'd grow a climber and train it, having planted it where I can get access to it. That's absolutely possible.
Aclimber on your shed with a trellis seems a possible option.