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Sow very fresh seed 1/4 inch deep thickly in cool, well-drained soil, as germination rates drop dramatically when seed is more than a few months old — plan to sow thickly and use thinnings. Agretti is an Italian coastal plant related to glasswort, and it thrives in sandy, saline, or alkaline soils w

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Orange Balsam Thyme

Thymus vulgaris 'Fragrantissimus'

Propagate from cuttings to preserve the distinct orange-balsam fragrance of this thyme. The narrow grey-green leaves lend a citrusy note to poultry, fish, and marinades. Set plants in lean, fast-draining soil in full sun and keep water to a minimum. Shear lightly after bloom to maintain a tidy mound

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Orange Mint

Mentha x piperita f. citrata

Propagate from stem cuttings or divisions, since named mints do not come true from seed. This citrusy peppermint variety perfumes teas, desserts, and cocktails with orange-bergamot notes. Plant in moist, rich soil in partial shade and confine roots to a buried pot or bottomless container. Water freq

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Orange coneflower

Rudbeckia fulgida

Plant in well-drained, average to moderately fertile soil in full sun; Rudbeckia fulgida is the perennial species behind the famous 'Goldsturm' cultivar that revolutionized native plant gardening in the 1980s. Unlike the biennial R. hirta (common black-eyed Susan), this species returns reliably from

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Orange cosmos

Cosmos sulphureus

'Bright Lights' is a vibrant sulphur cosmos blend with bold 2.5-inch flowers in warm oranges, golds, and reds from midsummer to first frost. Direct sow after the last frost once soil is warm, barely covering the seed. Grow in full sun in average to lean soil, since rich ground favors foliage over fl

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