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Bugbane 'Hillside Black Beauty'

Actaea simplex 'Hillside Black Beauty' · Ranunculaceae

Bugbane 'Hillside Black Beauty' (Actaea simplex 'Hillside Black Beauty') in flower
Photo: Megan Hansen, via Wikimedia Commons (CC BY-SA 2.0)

The darkest bugbane: lacy leaves of near-black purple all season, then tall wands of scented, pink-tinged white flowers in early autumn.

Size
5 ft tall, 2½ ft wide
Zones
4 to 8
Light
Part sun to part shade
Flowers
Late August to early October
Pets
Toxic (severe)
Job in a bed
Specimen

A bed built around bugbane 'Hillside Black Beauty'

The planner designed this bed around bugbane 'Hillside Black Beauty' when this page was made: a 12 × 6 ft (3.7 × 1.8 m) cottage garden in zone 6, part sun. It chose the other plants from the 708 that suit those conditions, and says below why bugbane 'Hillside Black Beauty' stands where it does.

A 12 × 6 ft (3.7 × 1.8 m) bed at eye level in mid September: Bugbane 'Hillside Black Beauty', Lingonberry, Carpathian bellflower 'Blue Clips', Foxglove beardtongue, Japanese forest grass 'Aureola', Oriental lily 'Casa Blanca', Hyacinth 'Delft Blue'.
A 12 × 6 ft (3.7 × 1.8 m) cottage garden in zone 6, part sun, seen from the path in mid September.
1. Bugbane 'Hillside Black Beauty'14. Foxglove beardtongue44. Foxglove beardtongue44. Foxglove beardtongue44. Foxglove beardtongue44. Foxglove beardtongue42. Lingonberry22. Lingonberry22. Lingonberry23. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'32. Lingonberry22. Lingonberry22. Lingonberry24. Foxglove beardtongue44. Foxglove beardtongue44. Foxglove beardtongue46. Oriental lily 'Casa Blanca'63. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'33. Carpathian bellflower 'Blue Clips'35. Japanese forest grass 'Aureola'55. Japanese forest grass 'Aureola'55. Japanese forest grass 'Aureola'57. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'7. Hyacinth 'Delft Blue'
From above, to scale. Each circle is one plant, as wide as the room it needs.

The plants

  1. 2 Lingonberry × 6, pink
  2. 3 Carpathian bellflower 'Blue Clips' × 8, blue
  3. 4 Foxglove beardtongue × 8, white
  4. 5 Japanese forest grass 'Aureola' × 3, chartreuse leaves
  5. 6 Oriental lily 'Casa Blanca' × 1, white
  6. 7 Hyacinth 'Delft Blue' × 12, blue

Why this plant

  • A classic partner for Japanese forest grass 'Aureola'. Both are on this plan. A pairing gardeners have proved outranks a general rule.

Why here

  • Anchors a back corner. At 5 ft it is the tallest plant here, and the tallest close the ends of the bed, where they stand in front of nothing.
  • A step in the back row. Next to foxglove beardtongue (3½ ft): no two neighbours there are the same height, so the back steps up and down like a skyline.
  • One plant, alone. A feature plant is seen as an object, and needs clear ground around it.

Why now

  • In flower for six weeks. From late August to early October.
  • Closes the season. In all that time nothing else on the plan is in flower.

Planned as a cottage garden: 26 of the 26 plants (100%), bulbs aside, stand alone or in groups of no more than five, small enough for the kinds to mingle. In winter there are still lingonberry and Japanese forest grass 'Aureola' to look at. The bed is balanced: the left half carries 52% of the visual weight and the right half 48%.

The planner's own design check: 11 Excellent, 5 Good, 1 Satisfactory.

Open this bed in the planner Change its size, the sun or the style, move plants about, or swap one for another.

Where bugbane 'Hillside Black Beauty' goes in a border

At 5 ft it belongs at the back of a bed. In the planner's ten height classes it is tall (4 to 5 ft).

Its job: specimen. A feature plant with a shape of its own. It stands alone with room around it, and repeats only at a distance.

Dark foliage at the back of a shady bed makes everything in front of it glow. The flower wands lean towards the light, so give it open sky. It sulks in dry soil.

  • Dark foliage for moist shade
  • Autumn flowers and scent
  • A backdrop for gold and silver leaves

What to plant with bugbane 'Hillside Black Beauty'

Plants recorded as good partners for it, and what each pairing does:

  • Japanese forest grass 'Aureola': its chartreuse leaves are a setting for the flowers, before and after; low enough (16 in) to stand in front of it; happy in the same moist soil.
  • Hosta 'Sum and Substance': its chartreuse leaves are a setting for the flowers, before and after; bold leaves against its medium ones; a low mound at the foot of its spires.
  • Japanese anemone: in flower together for six weeks, from late August; low enough (3 ft) to stand in front of it; happy in the same moist soil.

Questions about bugbane 'Hillside Black Beauty'

Does bugbane 'Hillside Black Beauty' need sun or shade?

Bugbane 'Hillside Black Beauty' grows in part sun (4 to 6 hours of sun, including some afternoon sun) and part shade (2 to 4 hours of sun, mostly in the morning).

It wants soil that stays evenly moist, rich in organic matter, and plenty of water.

What zones does bugbane 'Hillside Black Beauty' grow in?

USDA zones 4 to 8. It is hardy to zone 4, which means it survives winter nights down to about −20 °F (−29 °C).

Above zone 8 it struggles: the zones measure winter cold, but a plant's top zone usually means the summers are too hot or the winters too mild for it to rest.

Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.

When does bugbane 'Hillside Black Beauty' flower in my zone?

In zone 5 it flowers late August to early October. As a summer flower it moves about half a week for every zone: earlier where it is warmer.

Roughly when bugbane 'Hillside Black Beauty' is in flower
Zone 4Early September to early October
Zone 5Late August to early October
Zone 6Late August to early October
Zone 7Late August to early October
Zone 8Late August to early October

Worked out from Hopkins' bioclimatic law: spring arrives about four days later for each degree of latitude north, and one zone is roughly two degrees. A warm spring or a cold one moves any garden two weeks either way.

How far apart should bugbane 'Hillside Black Beauty' be planted?

24 in (60 cm) apart, from the middle of one plant to the middle of the next. That is a little closer than its full width of 2½ ft (75 cm), so a group knits into one patch.

It grows 5 ft (150 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.

How many bugbane 'Hillside Black Beauty' plants do I need?

At 24 in apart, set out in staggered rows:

  • 3 to fill 10 square feet (about 1 m²)
  • 6 for a single row 10 ft (3 m) long
  • 10 to fill a 4 × 8 ft bed on its own

In a mixed border, plant it as one, with clear ground around it: a feature plant is seen as an object, and a group of them is a thicket.

In the bed above, the planner used one in one group.

Is bugbane 'Hillside Black Beauty' poisonous to dogs and cats?

Yes: severe toxicity to people, dogs, cats and horses. All parts are highly poisonous if eaten, the roots most of all.

Rated from NC State Extension. Where references disagree, the more cautious rating is used.

Is there a pet-safe plant like bugbane 'Hillside Black Beauty'?

These come closest to doing what bugbane 'Hillside Black Beauty' does, and no toxicity is recorded for them:

  • Canadian burnet: the same size, the same flowering time and the same colour; a drift, not a specimen, wants wet soil.
  • Flat-topped aster: the same colour; a drift, not a specimen, 6 in wider.
  • Garden phlox: the same colour; a drift, not a specimen, 20 in shorter.

Matched the way the planner's Swap button matches plants: the same job in a bed, then size, then flowering time.

Do deer eat bugbane 'Hillside Black Beauty'?

Mostly not. NC State lists it as resistant to deer and rabbits. No plant is proof against a hungry deer in a hard winter, but this one is low on the menu.

What flowers after bugbane 'Hillside Black Beauty'?

Bugbane 'Hillside Black Beauty' is over by early October. These start as it finishes and carry the same spot on, so it never goes flat:

What does bugbane 'Hillside Black Beauty' look like in winter?

Bugbane 'Hillside Black Beauty' dies down to the ground and there is nothing to see until spring. The old stems can be cut in autumn, or left until spring as shelter for overwintering insects.

Is bugbane 'Hillside Black Beauty' good for bees and butterflies?

Bugbane 'Hillside Black Beauty' is visited by pollinators.

More Actaea

In these guides

Zone guides: Zone 4 · Zone 5 · Zone 6 · Zone 7 · Zone 8

In flower in: August · September · October

Every fact on record

Type
Perennial
Size
5 ft (150 cm) tall, 2½ ft (75 cm) wide
Plant
24 in (60 cm) apart
Height class
Tall (4 to 5 ft)
Place in the bed
Back
Flowers
Late August to early October; upright spires; white, pink
Leaves
Medium texture, herbaceous; purple, black
Shape
Upright, clumping
Hardy in
USDA zones 4 to 8
Light
Part sun, part shade
Soil
Rich, evenly moist
Water
High
Feeding
Light, in spring
Family
Ranunculaceae
Comes from
Asia
Attracts
Pollinators
Stands up to
Deer, rabbits, black walnut

Checked against NC State Extension. Flowering times are for zone 5: later in colder zones, earlier in warmer ones. Toxicity and spread information is a general gardening guide, not veterinary or medical advice, and invasive status varies by region. If a person or pet eats a plant, contact poison control or a vet. Check your local invasive species list before planting anything with a spread warning.