I love Nasturtiums. Great in the garden, though they do attract aphids. Easy to grow (good starter plant for kids) and good to eat. Toss 'em in a salad, make capers, vinegar, avocado dip, lots of recipes on the net. Here are a few.
"Forsythias are popular early spring flowering shrubs in gardens & parks.[..] They are grown & prized for being tough, reliable garden plants.[..] Forsythia is frequently forced indoors in the early spring."