I have this northeast corner in my backyard; the whole in the ground is only 11” x 22”, so I’m thinking of putting a planter box on it. I’d like to put a plant in the corner, ideally a climbing rose or some other vine that climbs on the (east) fence and the shed you can see on the right. Would a deep planter allow for a climbing rose there? There’s good afternoon sun in that spot. If so, what would be the require measurement of the planter? And if not, can you recommend some other vine or plant? Thank you.
Thank you for contacting the Toronto Master Gardeners regarding a suitable climbing plant for your space.
I am concerned that a climbing rose in a container may not overwinter well and may not receive enough sun in your location. However, if you choose to try this option, please look at this previous post on The Toronto Master Gardener website regarding growing roses in containers.
There are many options for vines that will grow in the part sun / part shade conditions you have. Another previous Toronto Master Gardener post refers to native vines you may want to check out.
Another option to consider is a climbing hydrangea vine (Hydrangea anomala subsp. petiolaris), which is a deciduous, woody plant that has lovely white lacy flowers in June. It adheres well to surfaces with aerial roots. These plants like rich, moist soil and will do well in sun or part shade. This Missouri Botanical Garden page has information about this vine found at the link below. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d370
Similarly, Japanese hydrangea (Schizophragma hydrangeoides) is another good choice. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=f520
Another flowering option is clematis, which come in a wide variety.
Since you are considering a planter and not planting directly into the soil, a previous Toronto Master Gardeners’ post provided a link to a blog about winterizing containers. I am including the link here.