Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live in a cold climate and/or want plants to fill in more quickly, plan to space at the shorter end of the range. If you live in a warm climate, are on a limited budget, or are willing to wait longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. There’s really no such thing as "maximum spacing": if you don’t want your plants to touch, you can space them as far apart as you’d like. All plant spacing is calculated on center, or in other words, the centers of the plants are spaced one half of their eventual width apart:
Unless you are planting in a straight line, as you might for hedges or edging, space your plants in a staggered or zig-zag pattern for a more interesting and naturalistic look:
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DescriptionResembling freshly creamed butter, the fluffy pale yellow and white blooms of Butter & Sugar Siberian iris (Iris sibirica) add a sweet touch to water features and flowerbeds. Its two-toned flowers appear in June atop clumps of slender green foliage and bloom profusely. Reliable, adaptable, and incredibly easy to care for, plant this iris in masses for a dreamy summertime display.DetailsBotanical name: Iris sibirica 'Butter & Sugar' Common name: Siberian Iris Zone: 3 - 9 Sun exposure: Full sun (6 +hours sun), part sun (4-6 hours sun) Height x width: 28" tall x 18-25" wide Flower color: White, yellow Foliage color: Green Season of interest: Early summer Bloom time: Summer Features: Rabbit resistant, heat tolerant, deer resistant, cold tolerant, best for beginners Uses: Border plant, rain garden, mass planting, cottage garden, cut flower, wet areas, woodland garden, suitable for slopes How To GrowSoil: Average, dry to medium, well-drained soils. Can tolerate damp soils like around ponds or other water features. Light: Does well in full sun but will tolerate part sun in warmer climates. Water: Average — Water regularly until established. Spacing: 2-3' Fertilizing: Spring application of a timed release, or organic fertilizer Winterizing: No special care needed. Maintenance & pruning: Best left undisturbed. Can be divided in fall or spring once blooms lessen. It can take a few seasons to bloom again after division or transplanting—no need to deadhead. Cut back old foliage in spring.
Ideas & Inspiration
11 Plants For Rock Gardens (That Aren’t Just Succulents)
Tough-to-grow sites just got easier to fill! If you’re looking to design a rock garden, ideas for rock garden plants, and how to care for a rock garden, check out our colorful, fragrant, & textured favorites.