- Type:
- Herbaceous perennial
- USDA hardiness zones:
- 3-8
Royal Standard is a large hosta. It resulted from a cross between H. plantaginea and H. sieboldiana. It grows in a mound to 26\ tall but spreads to 63\" wide. Narrow, oval, bright medium green leaves (to 9\" by 5\") with a satiny sheen have faint marginal undulations, distinctive veining, acute tips and cordate lobes. Highly fragrant, funnel-shaped, white flowers bloom in late summer to fall on leafy, pale green scapes rising well above the foliage mound to 42\" tall. U. S. Plant Patent PP2467 was issued on January 19, 1965. Grulleman and Wayside 1986."
- Part shade to full shade
- Medium
- Low
Easily grown in average, medium moisture, well-drained soils in part shade to full shade. Tolerates full sun in cool summer climates. Elsewhere it is best in part shade (some morning sun). Leaves of this cultivar acquire yellowish-green tones in full sun. Plants are tolerant of a wide range of soil conditions. Plants perform best in rich, moist, organic soils, with a preference for consistent moisture during the growing season. Water is best applied directly to the soil beneath the leaves. Divide plants as needed in spring or autumn. Division is usually easiest in early spring before the leaves unfurl.
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