The Story
Plant Bio
Ammi majus is a tall, hardy annual with finely divided, feathery foliage. It produces large, dome-shaped umbels of tiny, pure white flowers, resembling lace.
Valued as a superb cut flower, its airy structure and long vase life make it a favorite for floral arrangements. It attracts a wide range of beneficial insects to the garden.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Annual
Height
36 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7
Water
Moderate
Humidity
Low to moderate
Lifespan
Annual
Native To
Mediterranean regions
Toxicity
Sap may cause skin irritation
Bloom period
Late spring – Early summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck seeds into well-draining soil in spring after last frost.
- Mist cuttings to maintain humidity during rooting process.
- Water regularly to keep soil moist but not waterlogged.
- Thin seedlings to prevent overcrowding for healthy growth.
- Fertilize monthly with a balanced organic fertilizer during growing season.
- Prune spent flower heads to encourage new blooms and maintain shape.
Pro Tip
Sow seeds directly in the garden for best natural growth and vibrant blooms.
Keep It Thriving
Care Guide
Do
- Provide full sun for optimal flowering ☀️
- Water consistently, especially during dry spells 💧
- Deadhead spent flowers to promote continuous blooming
- Mulch around plants to retain moisture and suppress weeds
- Prune lightly in early spring to shape the plant
Don't
- Avoid overwatering to prevent root rot ❌
- Do not plant in heavy, waterlogged clay soil
- Refrain from fertilizing late in the season to prevent weak growth
- Avoid excessive pruning during flowering period
- Never ignore pest infestations
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Harvest | ||||||||||||
| Plant | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Bishop's Flower questions
What zones can Bishop's Flower grow in?
Bishop's Flower is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Bishop's Flower deer resistant?
Yes — Bishop's Flower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Bishop's Flower bloom?
Bishop's Flower typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Bishop's Flower need full sun?
Bishop's Flower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Bishop's Flower drought tolerant?
Yes — once established (usually after the first full season), Bishop's Flower handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Ammi to compare
Keep exploring
Explore the genus
Hardy in your zone?
Grow Bishop's Flower with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.