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Northwest Regional Reports

Regional Picks: Grass Companions – Northwest

Fine Gardening – Issue 177

 


 

1. Rusty Foxglove

Rusty Foxglove
Photo: Richie Steffen

Name: Digitalis ferruginea

USDA Hardiness Zones: 4 to 8

Size: Up to 4 feet tall (in flower) and 1 foot wide

Conditions: Full sun; well-drained soil

The contrast of vertical lines helps the soft, rounded forms of grasses stand out in a garden. Rusty foxglove’s tall, flowering spires offer this upright contrast along with a beautiful, interesting flower. In early to midsummer, this perennial’s thin stems send up spikes of small blooms that are an interesting mix of a pale yellow exterior blushed with apricot pink and a rich interior of golden yellow and pumpkin orange with rusty brown veins. Once the flowers are finished, the seed heads turn a dark brown, offering textural and color differences, diverging from the tan seed heads of most grasses. This is a short-lived perennial, but it will gently reseed in open spaces, giving you plenty of young, vigorous plants that can be moved throughout your garden.

 

2. Naked Ladies

Naked Ladies plant
Photo: Richie Steffen

Name: Nerine bowdenii

Zones: 7 to 10

Size: 2 to 3 feet tall and 1 foot wide

Conditions: Full sun; lean, well-drained soil

Nerine, often referred to by its more risqué common name, naked ladies, is a long-lived bulb of South Africa that produces surprisingly bright pink flowers in autumn. The bulbs remain dormant all summer then spring to life in early to midfall, when thin buds that resemble amaryllis sprout up and burst into whimsical spidery blooms. Plant them near the base of smaller grasses where the colorful flowers peek through the fine, grassy foliage. Soon after the grass is cut down for winter, the bright green, strappy leaves of naked ladies emerge and remain until late spring to early summer. Once the grass begins to grow, the fading Nerine leaves are hidden from view, holding their floral surprise until the next autumn.

 

3. ‘Ogon’ Spirea

Ogon Spirea
Photo: Michelle Gervais

Name: Spiraea thunbergii ‘Ogon’

Zones: 4 to 8

Size: 4 to 5 feet tall and wide

Conditions: Full sun to partial shade; tolerates a wide range of soils except wet locations

The loose, wild, wispy growth of ‘Ogon’ spirea adds a touch of airiness that complements the movement of swaying grasses in the landscape. This tough, delightful shrub blooms in early spring with tiny white flowers strung along the willowy stems like gleaming little pearls. They are soon surpassed by brilliant, lemon yellow leaves that glow all season long. The golden foliage is unexpectedly resistant to burning in full sun if given water during droughty weather, and it remains bright until subtle shades of orange blush the clear yellow autumn color.

 

4. ‘Lucifer’ Crocosmia

Lucifer Crocosmia
Photo: Kerry Ann Moore

Name: Crocosmia ‘Lucifer’

Zones: 7 to 9

Size: 3 to 4 feet tall in flower and slightly less in width

Conditions: Full sun; well-drained, average soil

‘Lucifer’ is one of the best crocosmias for height and bright color. This robust, easy-to-grow, summer-flowering perennial can be planted at the base of grasses, where it will grow through the crown. Broad, spiky crocosmia foliage then breaks through the fine grass texture in a delightfully contrasting manner as it sprouts up in late spring. By mid- to late summer, the flower stems will rise above the leaves and erupt into brilliant displays of intense, orange-tinted red. The spent seed heads can remain as an attractive yet more subtle element. Cut back the leaves in early autumn once the foliage begins to flop.


Richie Steffen is the director/curator of the Elisabeth C. Miller Botanical Garden in Seattle.

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