Medicinal Herb
Rue is a striking ornamental herb with lacy blue-green foliage that grows into a compact bush reaching 24-36 inches tall. Hardy from zones 4 to 9, this open-pollinated perennial from the Rutaceae family takes 100-125 days to reach harvestable maturity. Grown primarily for its aromatic, feathery foliage rather than for culinary consumption, rue has been treasured in herb gardens for centuries as both a decorative plant and a source of traditional remedies. The plant's delicate appearance belies its resilience; once established, it thrives with minimal fuss.
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Low
4-9
36in H x ?in W
Perennial
Moderate
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The lacy blue-green leaves are the real draw here, creating an almost ethereal texture in the garden that contrasts beautifully with bolder plants. Rue self-sows readily once established, meaning a single planting can seed itself year after year if you allow it. The plant responds well to annual spring pruning and can be propagated not just from seed but also from stem cuttings or root division, giving you multiple ways to expand your planting.
Rue is grown primarily as an ornamental herb for its distinctive blue-green, finely textured foliage rather than as a culinary ingredient. Gardeners value it in herb gardens and ornamental borders for its visual appeal and aromatic qualities. It is traditionally used in herbal preparations, though internal use requires guidance from a qualified practitioner due to potential toxicity.
Sow seeds 1/4 to 3/8 inch deep in cells or flats about 7 weeks before your last frost date. Maintain soil moisture and keep the seedbed warm between 60-70°F (16-21°C). Once seedlings are large enough to handle, thin or transplant them to larger cells. Grow indoors until seedlings reach several inches tall, then harden off before transplanting outside.
Transplant seedlings outdoors after they reach several inches in height and have been hardened off. Space seedlings 12 inches apart in the North and 24 inches apart in the South, in rows set 18 inches apart.
In spring, sow 6-12 seeds per foot directly into the garden at a depth of 1/4 to 3/8 inch in rows spaced 18 inches apart.
Harvest rue foliage before the plant comes into flower for the most flavorful and potent material. Cut stems and leaves as needed once the plant is established.
Prune rue annually in early spring after new shoots start breaking. This annual pruning keeps the plant compact, encourages bushier growth, and maintains its ornamental appearance.
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