Plants that have "been there forever". North, south, east, west. Privacy. Views. Water distribution. Drainage. Soil conditions. Empty spots. Crowded spots. 110 above to 20 below.

You could GUESS, spend money on plants and have fun learning if those were the best choices for the location you're enhancing, and see how that works out in a few seasons.

Or you could get professional advice from someone who has coached hundreds of beautiful spaces into their full potential.