First of all, I sympathize with you about the rock wall - it's awful. Second, I'm not clear where your property line is. Are you talking about planting right up to the edging of that wall? are those your previous plantings in the photo?

At first I thought perhaps fencing wasn't allowed in your allotment but I see a white picket(?) in the background beyond. Not sure your style of house is quite right for a picket but if cottage style is what you are after, I'd build my own picket fence for screening the rock wall and do your cottage flower and hedge plantings on your side of the fence.

You cannot touch those rocks if they happen to be within their property line. As far as I understand , you can only do so, if you share that line. So do some research first about this.

It's possible to set up something within your property like a trellis or a line of hedges just to create that cottage look.

That's why I asked the OP where the property line was and if he/she actually planted that close to the wall (re the one photo with what looks like shrubs).

The rocks come right up to and a little on my property. Plus, we have great neighbors, and they are all for my beautification project. Those 3 plants are bloomerang lilacs. Today I bought 5 everygreen euonymous to go in between the lilacs. They will be 5x5 when full grow, as will the lilacs. I think I will put the euonymous all the way down the rest of the way since the lilacs didn't thrive in the partial shade farther down.

yes like campanulas or even cascading lavenders or rosemary.

Danceme, where are you? If you put your zone and general location you should get suggestions of plants that will grow in your area that like being in the pockets of the rock wall as floral_uk suggested. I think using plants in the rock wall will make it fit into your general garden theme and soften the current starkness of the wall. I also tuck tufts of moss or lichen into some of the shadier spots in my rock walls to help them look more aged.

To add your zone to all of your posts, go to Your Houzz in upper right of every page, click Edit Profile, and on the left side click advanced settings. Well down the advanced settings page is a blank labeled Climate Zone for Garden Forums along with a link to find your zone.

If you add your state or the nearest large city you will get even better information since zone only relates to average coldest winter temperatures.

Then return to the top of the page and click Done Editing.

Where I am, I have grown a bunch of different plants in walls: ferns, hens and chicks (Sempervivums), Sedums, Campanulas, Aurinia saxatilis, fern-leaf bleeding heart (Dicentra eximia) among others. I just tuck some soil into the pockets between the rocks and plant. It's easier if the plants are small and then they grow to fill the spot. The plants reduce the maintenance to a small amount of weeding since they keep most weeds from sprouting in the gaps between rocks, and I need to do some clean-up of dead foliage after winter freeze. Most of my rock walls face west, though a couple face north and so only get sun in late afternoon in midsummer. I do need to keep an eye on moisture in the western-facing walls where they are in sun.

Thanks for the tip! I added my zone (6) to my profile. I'm in Utah, and we have beautiful mountain views in every direction.

In part of the wall I have angelina sedum growing. I just ripped out a bunch of overgrown ice plant from one of my beds and put some in the wall. I also just ripped out some overgrown dragons blood that I could add. I started out filling in the pockets slowly bc there are SO MANY pockets to fill and it gets pricey. The angelina has grown so much that I might divide some and redistribute. I love the color they add year round. The ice plant and dragons blood should do the same. I also happen to have 2 buckets of dirt from planting those five bushes that I could use to beef up the holes, too. I thought about adding rock cress or soap wort. Is that getting to be too much? It is a huge wall. It's about 60 feet long.

The top is so narrow there is no space to plant anything, and I doubt they have plans to. They are still trying to fill in their very many empty beds. And the truth is, they don't have to look at it or weed it. I do. So they don't care.

I need to get 2 more bloomerang lilacs to fill in, and will decide how far down I will take it. This wall faces east.

I wouldn't add soapwort (Saponaria) as it tends to seed around too much and will add work to maintaining this wall, but the other divisions sound like a good idea. Dianthus deltoides ('Brilliancy' blooms for me all season and will retain its gray-green foliage all winter) and Dianthus gratianopolitanus ('Greystone' has white bloom in spring, but has dense grey-green mats of foliage the rest of the year), Aurinia saxitalis (yellow flowers with gray foliage), or hens and chicks (Sempervirens) will all do fine there also. If you are interested in growing from seed, I found both Aurinia and Dianthus easy to start from seed, and hens and chicks can be divided from a large pot or you may find some at a plant swap. I love trailing Campanulas like 'Blue Waterfall', portenschlagiana, poscharskyana, and 'Birch Hybrid' for planting in walls, but your climate may well be too dry for them.

I just love campanulas. i have these and they are just so pretty cascading down. I would also suggest thrifts and if you've ever seen the wild thrifts growing along the Nova Scotia cliffsides, you'll want to get these in your yard as well.