Gooseneck Loosestrife Bouquet
One of my favorite flowers has a funny name and can be invasive but I would still say find a spot in your garden for gooseneck loosestrife.
This perennial produces lovely tiny white flowers in clusters that resemble a goose neck. The flowers last a long time as cut flowers, and are a favorite of butterflies and a variety of bees.
Relatively easy to grow where I live, USDA zone 5b, gooseneck loosestrife will grow in shade. It can also grow in sunshine but if it has a preference of where to invade, it will choose a shady spot.
I would give this plant its own corner of the flower garden, allowing it to grow until you have a nice little bed you can cut from and enjoy in vases inside. The flowers are pretty all by themselves or mixed in with other flowers blooming at the same time.
If gooseneck loosestrife starts to move into areas you don't want it, just pull out of the ground. The plant grows with shallow roots and can be easily removed by hand.