Smokey Bronze Fennel is a stunning cultivar of Foeniculum vulgare prized for its deep bronze foliage that stands in striking contrast to its delicate yellow flowers. Growing 48 to 60 inches tall in hardiness zones 4 through 4, this fennel thrives in full sun and moderate moisture, blooming from June through November. The copper-bronze fronds create a visual drama in the garden while the intricate flower clusters provide abundant nectar and pollen for beneficial insects throughout the growing season.
12
Full Sun
Moderate
4-4
60in H x 36in W
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Moderate
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The unusual bronze-colored foliage of Smokey Bronze Fennel is distinctive enough that young seedlings can be mistaken for weeds if you're not paying close attention during garden maintenance. Tall branching stalks crowned with yellow flowers make this a prime attractant for butterflies, ladybugs, and lacewings, bringing a circle of beneficial insects to your garden. The deep colored fronds provide striking contrast in beds and borders, offering ornamental value alongside culinary and pollinator benefits.
Smokey Bronze Fennel serves multiple purposes in the garden and kitchen. The foliage can be harvested for culinary use, while the seeds and flowers attract and support beneficial insects. The plant functions as both an ornamental specimen for its dramatic coloring and a practical herb for those who use fennel in cooking.
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Start seeds indoors 4 to 6 weeks before your last expected frost date. Soak seeds for 4 days prior to sowing to improve germination. Sow thinly in seed starting mix and keep the soil warm and evenly moist at 55 to 65 degrees Fahrenheit, providing good light. When seedlings reach 3 to 4 inches tall, gradually acclimate them to outdoor conditions before transplanting.
Carefully transplant hardened-off seedlings into very well-drained soil once frost danger has passed. Space plants 12 inches apart and handle gently to avoid damaging the tender plants. The unusual bronze color of young seedlings can make them easy to mistake for weeds, so mark their locations clearly.
Direct sow in early spring into cool soil, planting seeds at a depth of 1/2 inch. Seeds will germinate in 7 to 30 days when soil temperatures are between 50 and 75 degrees Fahrenheit.
Harvest foliage as needed once plants are established. The intricate yellow flowers appear from summer through fall and can be harvested for their nectar value to pollinators or for culinary purposes if desired.
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