Q.Zone 3 Evergreeens For Narrow Container
I need advice on evergreens that I can plant in a 9” x 30” container. I had originally considered two 1gal boxwoods but worry they don’t have enough space in the 9” direction. The goal is to have them grow tall enough to deter a toddler from walking over the planter. What other options do I have? Thank you!

Certified GKH Gardening Expert
There aren't many that will tolerate a container this small, but you may try a juniper. Junipers tend to take to Bonsai better than most shrubs, and in a container this small, you will want to treat it as such.The exception is that you have more room than a, traditional, Bonsai will, which offers more leniency. These articles will help:
https://www.gardeningknowhow.com/ornamental/shrubs/juniper
https://www.gardeningknowhow.com/houseplants/bonsai/bonsai-basics-starting-your-own-bonsai.htm