Forsythias in full bloom
Yellow is my favorite color, so you KNOW I love the forsythia bushes here in Western Washington state. And they are always the first to flower. We have a LOT of them on our property and they are so pretty, and (outside of occasional pruning, which these need) maintenance free.
These are still young - the plants grow very fast and are an excellent addition to any landscaping project in a suitable habitat zone (we are in 8b).