Invasive – Yellow Flag Iris
1. Cardinal Flower
Name: Lobelia cardinalis
USDA HardinessZones:: 2 to 8
Size: 3 to 4 feet tall and 1 foot wide
Conditions: Full sun to partial shade; prefers rich soil with good water retention
It’s no wonder that overpicking has made cardinal flower a rarity in some parts of the country. Its towering, late-summer blooms are irresistible, and their power to beckon hummingbirds is an added bonus. In the wild, this native grows near streams and likes its feet wet. When planted in moist, organic soil, cardinal flower will self-sow with vigor, freely sending up scarlet spires wherever it likes.
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