Posted: 18/09/2015 at 17:08
Hi Scott - 12 inches isn't very wide so probably best to go for smaller, low growing planting. You could have a mix of perennials and evergreens and if you want your daughter to get interested, you can sow some little annuals in spring with her. Nasturtiums are one of the easiest for children and they grow quickly with bright flowers so they're immediately appealing to them.
As Logan says , check what the soil's like, and see what's growing in neighbouring gardens too. You can always ask other people what they have. The aspect is also important - no point growing sun lovers if the site's in full shade for instance.
This is a good time of year to plant all sorts of hardy plants, and many GCs, DIY stores and nurseries have sales so you can often pick up some bargains. Adding compost to the existing soil will help with the structure, and if it's sticky, heavy clay, well rotted manure and grit will benefit it. You can get manure in bags from garden centres etc if you don't have access to a riding school or similar to get it fresh
Lastly, have a think about how you want the garden to look - bright colours or a simpler palette for example, and also how much time you have to spend in it. No point in having high maintenance plants if you don't have time to attend to them. Then we can all come up with lots of suggestions for you.
Hope that's of some help.