Cheryl, if you get stuck, or before you get stuck, just take a photo of your unknown plant and post it here on the plant I.D. forum! There's a lot of us who enjoy identifying plants.
( Here's a secret: shhh...I used to work as an estate gardener, and people would call me to come identify plants in their yards. Some had moved into houses with existing landscapes, and some had gardeners who planted unusual plants. Sometimes I was stumped, and had to consult my books. The cool thing was, I got PAID to do this! There's nothing better than spending time doing what you love, and getting paid for it. )
And here's another bit of happy news...today I went to a native plant sale, and they had a room full of gardening books for sale! Suggested donation was $5 each! I limited myself to just 6, and one was SIGNED by Penelope Hobhouse! Oh, happy day!
@Rick Corey--
Thank you