Hardy Marginal Plants
- Hardiness: Zones 3-9
- Height: 10 feet
- Flower: Cylindrical flower in mid to late summer; good fresh or dried in arrangements
- Foliage: Sword-like flat, gray green, leaves arise form plant base; leaves turn bright yellow in fall
- Comments: Spread by rhizomes; can take over a small area; can be grown in containers; native to marshes and wetlands
- Cultivars/Species: Variegata
- Hardiness: Zones 4-10
- Height: 18 inches
- Flower: Blue to violet flowers in summer
- Foliage: Much branched, succulent, square stems; dark green oblong leaves
- Comments: Plant in 1 to 2 gallon containers; rich soil; cover with .5 to 2 inches of water
- Cultivars/Species: N/A
- Hardiness: Zones 4-11
- Height: 18 to 24 inches
- Flower: Soft blue flower spike appears from a leaf bract at top of stem
- Foliage: Glossy, erect, deep green leaves; slightly heart shaped with distinctive swirling
- Comments: Grows in shallow water (up to 18 inches covering the crown); sun to partial shade; can be grown in 5 gallon tub; thick creeping rootstock
- Cultivars/Species: Alba (white flowers); P. cordata var. lancelolata (narrow leaves and longer flower spikes; ht. 4 to 5 feet); Angustifolia
- Hardiness: Zones 4-9
- Height: 18 inches
- Flower: N/A
- Foliage: Contorted to corkscrew, dark green needle-like leaves
- Comments: Grow with 1 to 6 inches of water over crown; grow in 2 gallon container; sun to partial shade
- Cultivars/Species: N/A
- Hardiness: Zones 3-11
- Height: 3 to 6 feet, spread - 24"
- Flower: N/A
- Foliage: Stems dark green with alternating bands of green and cream.
- Comments: Sun to partial shade; plant in depths to 12" or in wet soil;
- Grow in 2 to 5 gallon container; remove all green stems as they occur
- Grow in full sun to part shade
- Cultivars/Species: N/A
- Hardiness: Zone 3 - 9
- Height: 9 inches
- Flower: Not showy
- Foliage: Liberally striped cream or white markings
- Comments: Grow in a wide mouth pot; does not grow as rapid as the speciesCultivars/Species: N/A
- Hardiness: Zones 3-10
- Height: 4 to 8 inches, spread 10 - 16"
- Flower: Sky blue, yellow centered flowers May through September
- Foliage: N/A
- Comments: Creeping underground rhizomes, or from seed; forms dense colonies; plant directly in gravel in pond, or in 1 gallon container, in up to 3 inches of water over the crown; naturalized on banks of still and slow-moving water
- sun to partial shade
- Hardiness: Zones 5-10
- Height: Floating on surface
- Flower: Short-lived papery, nonfringed, golden yellow flowers
- Foliage: Round, slightly dentate, glossy leaves
- Comments: Vigorous; can be aggressive; plant in 1-gallon containers; cover with 12 to 24" of water; full sun
- Cultivars/Species: N/A
