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Plant varieties and zone information

From "Garden Sense"
episode DGAR-203

(Continued from page 2)

Digitalis purpurea 'Excelsior Hybrid' – Excelsior Hybrid Foxglove

Biennial grown for its spikes of purple trumpet-shaped flowers in late spring
Plants grown from seed flower the second season and then die after setting seed
Collect seeds or allow them to drop to have plants the following year
Although used for heart medicine, all parts of this plant can be toxic
Plant in moist, organic, but well-drained soil
Plant in light to partial shade
Height: 3-5 feet; Width: 2 feet
Hardy in USDA zones 4-10:
- Zone 4: Sow seeds or plant in spring; plant in light shade; water during dry periods; mulch after first hard frost; protect from salt; remove mature plants after setting seed.
- Zone 5: Sow seeds or plant in spring; plant in light shade; water during dry periods; mulch after first hard frost; protect from salt; remove mature plants after setting seed.
- Zone 6: Sow seeds or plant in spring; plant in light to partial shade; water during dry periods; mulch after first hard frost; remove mature plants after setting seed.
- Zone 7: Sow seeds or plant in spring; plant in light to partial shade; water during dry periods; mulch after first hard frost; remove mature plants after setting seed.
- Zone 8: Sow seeds or plant in spring; plant in light to partial shade; water during dry periods; mulch after first frost; remove mature plants after setting seed.
- Zone 9: Sow seeds or plant in spring; plant in light to partial shade; water during dry periods; mulch in fall; remove mature plants after setting seed.
- Zone 10: Sow seeds or plant in spring; plant in light to partial shade; water during dry periods; mulch in fall; remove mature plants after setting seed; plants may languish in warmer, humid regions of this zone.

Salvia pratensis 'Rhapsody in Blue' – Blue Salvia

Gardener's Note: Salvia pratensis is a Class A noxious weed prohibited and quarantined in Washington State. For more information, see the link below.
www.nwcb.wa.gov

Herbaceous perennial grown for its spikes of deep lavender-blue flowers
Plant in average to poor garden soil that is well-drained; drought tolerant
Plant in full sun
Deadhead to prevent invasive spread
Height: 1-3 feet; Width: 1-3 feet
Hardy in USDA zones 4-8:
- Zone 4: Plant in spring after danger of frost has passed; plant in full sun; shear back if plants become untidy; mulch in fall; pull back mulch in spring; avoid exposure to salt.
- Zone 5: Plant in spring after danger of frost has passed; plant in full sun; shear back if plants become untidy; mulch in fall; pull back mulch in spring; avoid exposure to salt.
- Zone 6: Plant in spring after danger of frost has passed; plant in full sun; shear back if plants become untidy; mulch in fall; pull back mulch in spring.
- Zone 7: Plant in spring after danger of frost has passed; plant in full sun; shear back if plants become untidy; mulch in fall; pull back mulch in spring.
- Zone 8: Plant in spring after danger of frost has passed; plant in full sun; shear back if plants become untidy; mulch in fall; pull back mulch in spring.

Gardening by Zip Code
If you're looking to start a gardening projectbut don't know your gardening zone—visit the National Gardening Associations's USDA Hardiness Zone Finder. Enter your Zip Code to identify the proper zone.

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