Asparagus densiflorus 'Sprengeri' – Asparagus Fern Gardener's Note: This fern is a non-native invasive in frost-free areas such as Florida, the extreme Southern Gulf Coast and perhaps the West Coast. You should avoid planting it in these areas.
- Tender perennial, grown as a houseplant for its fine fern-like foliage and arching stems
- Plant in rich, moist but well-drained soil
- Plant in light to partial shade
- Height: 2-3 feet; Width: 2-3 feet
- Annual in zones 2-8
- Hardy in USDA zones (7)8-11:
- Zones 2-6: Plant outside or in containers after danger of frost has passed; plant in light shade with protection from hot afternoon sun; water freely during growing season; prune when needed; fertilize monthly while outdoors; bring indoors before first frost.
- Zones 7: Plant in spring; plant in light to partial shade with protection from hot afternoon sun; provide supplemental water during dry spells; may be marginally hardy in this zone.
- Zones 8: Plant in spring; plant in light to partial shade with protection from hot afternoon sun; provide supplemental water during dry spells.
- Zones 9: Plant in spring; plant in light to partial shade with protection from hot afternoon sun; provide supplemental water during dry spells.
- Zones 10: Plant in spring; plant in light to partial shade with protection from hot afternoon sun; provide supplemental water during dry spells.
- Zones 11: Plant in spring; plant in light to partial shade with protection from hot afternoon sun; provide supplemental water during dry spells.
