| IBERIS Candytuft |
| Iberis sempervirens 'Snowflake' |
Evergreen Candytuft |
| Perennial * * Evergreen foliage and pure white flowers in 2-3" inflorescences. |
| Height: 8-10" | Spread: 12" |
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| IPOMOEA Ornamental Sweet Potato |
| Ipomoea batatas 'Ace of Spades' |
Ornamental Sweet Potato |
| Companion Annual * * Bold, exotic, spade-shaped foliage on trailing stems. Leaves and stems are black-purple all season. Vines grow quickly once hot, humid weather sets in. Great accent as a ground cover or in containers. |
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| Ipomoea batatas 'Blackie' |
Ornamental Sweet Potato |
| Companion Annual * * Bold, exotic, deeply lobed foliage on trailing stems. Leaves and stems are black-purple all season. Vines grow quickly once hot, humid weather sets in. Excellent ground cover or in containers. |
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| Ipomoea batatas 'Marguarite' |
Ornamental Sweet Potato |
| Companion Annual * * Lime green, heart-shaped foliage on trailing stems. Vines grow quickly once hot, humid weather sets in. Excellent ground cover or in containers. |
| Height: 10" | Spread: 60-96" |
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| Ipomoea batatas 'Sweet Caroline Bronze' |
Ornamental Sweet Potato |
| Companion Annual * * Bold, exotic, deeply lobed foliage on trailing stems. Leaves and stems are a gold-purple blend. This selection was developed to have short internodes to produce a much more compact plant with smaller leaf size and less aggressive growth. Purported to be an improved selection for containers. |
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| Ipomoea batatas 'Tricolor' |
Ornamental Sweet Potato |
| Companion Annual * * Trailing stems with violet-pink and white variegation. Much less robust than the previous two cultivars. |
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| IRIS |
| Iris cristata |
Crested Iris |
| Perennial * * Clouds of pretty blue flowers float just above the foliage for two weeks in April or May. Unlike many iris, the foliage is handsome all through summer. Nice edging plant for the front of a shaded garden or path. Also a good slow moving ground cover. |
| Height: 5-10" | Spread: spreads |
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| Iris pallida 'Argentea-variegata' |
Sweet Iris |
| Perennial * * An excellent accent plant with flattened, silvery white leaves with green stripes. Lilac-blue flowers are fragrant. |
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| Iris pallida 'Variegata' |
Sweet Iris |
| Perennial * * Blue-green leaves with white and cream streaking. Lavender-blue flowers. Foliage looks good all season. Grow in well-drained soil. |
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| Iris pseudacorus |
Yellow Flag Iris |
| Perennial * * Bright yellow flowers in June. Solid green leaves. Grows in full sun if soil is constantly moist; needs partial shade if grown in drier situations. |
| Height: 24-42" | Spread: 24" |
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