Storm Cloud Agapanthus | Dramatic Dark Blue Flower Spikes

Storm Cloud Lily of the Nile

1 Gallon

$26.90

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Storm Cloud Lily of the Nile

Agapanthus ‘Storm Cloud'

A dramatic agapanthus with near-black stems supporting rich blue flowers, offering unique color contrast and architectural form.

$26.90

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Bay Area–Based Nursery

We specialize in plants grown and delivered in their original pots and soil.
Because of their size and weight, our plants are not suitable for long-distance shipping and are delivered locally to ensure health and quality.

While delivery is limited to our local service area, we’re happy to support garden design and plant selection remotely.

For local plant professionals, we’re always glad to connect and explore ways to support your customers.

Storm Cloud Lily of the Nile is a striking variety named for its moody, dark flower stems and rich blue blooms. Before the flowers even open, it makes a statement with its tall, nearly black scapes that rise like storm clouds above the green foliage. The flowers themselves are a beautiful mid to deep blue, creating a captivating contrast. This combination of dark stems and blue flowers gives it a distinctive, architectural presence that adds depth and drama to the summer garden.

Distinctive Dark Flower Stems: Features dramatic, deep purple to almost black flower stalks that provide visual interest before, during, and after bloom.
Vibrant Blue Flower Heads: Bears large umbels of clear blue flowers that pop against the dark stems and green leaves.
Tall & Architectural: Grows with a strong, upright habit, making it an excellent choice for adding height and structure to the back of borders.
Long-Lasting Garden Interest: The dark seed heads that remain after flowering are also ornamental and can be left on the plant for winter interest.
Easy-Care & Robust: Shares the standard agapanthus toughness, thriving in full sun and well-drained soil with minimal supplemental water.

Knowing how we measure the size?

When browsing our plants, you may notice size terms such as Gallon, Multi, or Stand. These describe how a plant is grown, containerized, or structured at the time of sale — not just its height. Understanding these terms will help you choose the right plant for your space and expectations.

🌱 Gallon Size (Container Size)

Gallon refers to the size of the nursery container the plant is currently growing in (e.g. 1 Gallon, 5 Gallon, 15 Gallon).

A larger gallon size generally means:
- A more established root system
- A sturdier plant
- Faster visual impact after planting
Example:
- 5 Gallon: Ideal for residential gardens, easy to handle, good balance of value and maturity
- 15 Gallon: More mature, provides quicker results in the landscape

Note: Gallon size does not guarantee a specific height, as growth varies by species.

🌳 Multi (Multi-Trunk / Multi-Branch Form)

Multi indicates the plant has multiple trunks or main stems growing from the base.

Commonly used for:
- Ornamental trees
- Feature plants
- Japanese maples, olives, crepe myrtles, etc.
Why choose Multi:
- Fuller, more sculptural appearance
- Strong visual presence even at younger ages
- Popular for design-focused landscapes

🌲 Stand (Single-Trunk / Standard Form)

Stand (short for Standard) refers to a single, dominant trunk with a raised or naturally formed canopy.

Commonly used for:
- Shade trees
- Street trees
- Orchard and structural plantings
Why choose Stand:
- Clean, classic tree form
- Easier clearance for walkways and lawns
- Preferred for long-term structure and uniformity

🌿 Choosing the Right Size

If you want instant impact → larger Gallon, Multi form
If you want long-term structure → Stand form
If you want flexibility and value → mid-size Gallon containers

If you’re unsure which size or form fits your project, our team is happy to help you select the best option based on your space, timeline, and design goals.

Features:Foliage: Arching, strap-like deep green leaves forming fountain-like clumps,Flowers: Large spherical umbels of vivid violet-blue trumpet flowers,Habit: Upright evergreen perennial with strong flower stems
Mature Height: 3-5 ft (including flower spikes)
Mature Width: 2-3 ft
Growth Rate: Moderate
Light Needs: Full sun to partial shade
Key Advantages:Dramatic dark flower stems contrasting with blue blooms,Exceptional heat and drought tolerance,Long-lasting cut flowers (up to 2 weeks),Deer and rabbit resistant,Salt spray tolerant
Landscape Uses:Mediterranean gardens,Water-wise landscapes,Poolside plantings,Architectural focal points,Mass plantings
Special Care:Soil: Well-drained; amend clay soils with grit,Water: Deep but infrequent irrigation,Fertilizer: Low-nitrogen formula in spring,Winter Care: Mulch in zone 8
Seasonal Interest:Flowers: Early to midsummer,Foliage: Evergreen in zones 9-11

Q: Should I cut back the dark stems after flowering?
A: You can leave the seed heads on for winter interest. To tidy the plant or prevent self-seeding, cut the spent stems back to the base in late fall or winter. The dark stems are durable and can be used in dried arrangements.

Q: How does it compare to 'Midnight Blue'?
A: While both have dark flowers, 'Storm Cloud' is distinguished by its exceptionally dark stems, whereas 'Midnight Blue' is celebrated primarily for its deep flower color. 'Storm Cloud' offers a two-toned effect.