Plant help needed please. We finally filled our large planter box running along the top side of the garage (refer to photos, grey garage). It has good amount of soil and a watering system however I would like suggestions for plants that are low maintenance and are self care variety. gaves is on the list, but what else? Ones that grows slowly perhaps and will soften the look. Attached some inpo photos too. Suggestions and photo ideas welcome. Thanks in advance.