The Story
Plant Bio
Citrus limon is a small evergreen tree in the Rutaceae family, widely cultivated for its acidic, oil-rich fruit. The species features glossy, aromatic foliage and produces fragrant, five-petalled flowers that give way to yellow, ellipsoid berries.
'Eureka' is a nearly thornless cultivar originating in California, distinguished by its open, spreading canopy and purple-bronze new growth. It is an everbearing selection that produces flowers and fruit continuously throughout the year, with peak flushes in spring and autumn.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Tree
Height
236 inches
Width
197 inches
Light
Full Sun
Zones
9, 10
Water
Moderate
Humidity
Moderate
Lifespan
Long-lived
Native To
California, USA (originating from Italian stock)
Toxicity
Non-toxic to humans
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Select a site in full sun receiving at least six to eight hours of direct daily sunlight.
- Improve heavy soils by mounding or incorporating organic matter to guarantee high drainage.
- Plant the graft union well above the soil level to prevent collar rot.
- Water deeply and regularly during the establishment phase and throughout fruit development.
Pro Tip
Avoid planting into heavy clay soils without mounding to improve drainage, as waterlogged roots quickly succumb to Phytophthora root rot.
Keep It Thriving
Care Guide
Do
- Feed with a dedicated citrus fertiliser every six to eight weeks during the warm growing season.
- Prune lightly in late winter to open up the canopy and remove dead wood.
- Apply mulch around the root zone, keeping it clear of the main trunk.
Don't
- Do not allow the soil to become waterlogged or boggy.
- Do not prune heavily or unseasonably, as this triggers soft flushes that attract citrus gall wasp.
- Do not use rootstocks such as Poncirus trifoliata, Troyer, or Carrizo citrange due to incompatibility.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Pest Check | ||||||||||||
| Prune |
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
Eureka Lemon questions
What zones can Eureka Lemon grow in?
Eureka Lemon is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
When does Eureka Lemon bloom?
Eureka Lemon typically blooms in year round through year round. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Eureka Lemon need full sun?
Eureka Lemon does best in full sun (6+ hours).
Is Eureka Lemon drought tolerant?
Yes — once established (usually after the first full season), Eureka Lemon handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Citrus to compare

Meyer Lemon
Citrus limon 'Meyer'

Key Lime
Citrus aurantiifolia

Moro Blood Orange
Citrus sinensis 'Moro'

Sanguinello Orange
Citrus reticulata 'Sanguinea'

Calamondin
Citrus mitis

Blondie Mandarin
Citrus reticulata 'Blondie'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Eureka Lemon 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.



