Over on my Royal Horticultural Society New Plants blog, I post about a plant that's new to British gardeners about every five days. Some of them have not yet arrived in North America, some of them originate in North America and may be familiar to American gardeners. But here are links to the all posts on new plants from January and February.
Hibiscus: New huge-flowered perennial varieties (above, click to enlarge)
Scabiosa Dessert Series: New from Hayloft Plants (right, click to enlarge)