Judas tree
Cercis siliquastrum
An early-spring showstopper: pink edible blossom bursts straight from the bark, feeding pollinators when little else flowers. A legume, but it doesn't fix nitrogen and grows slowly.
Judas tree in a syntropic line
Judas tree belongs in the Medium layer as a Secondary species. The productive heart — most of your yield lives here. Rough in-row spacing starts around 3.6 m in a syntropic row. Good line partners include Butterfly bush, Common sage. As a Secondary species it carries mid-term yield and structure while climax trees slowly claim the canopy.
Tolerances and growing conditions
- Strata
- Medium
- Lifecycle
- Secondary
- Soil preference
- Loam, Rocky
- Soil pH range
- 6 – 8
- Min. temperature
- -15°C
- Min. rainfall
- 450 mm/year
- Wind tolerance
- Medium
- Frost tolerance
- Medium
- Growth rate
- Slow
- Irrigation needed
- Low
- Foliage
- Deciduous
- Waterlogging tolerance
- Low
- Origin
- Mediterranean
- Native to Portugal
- Yes
How to manage it
Drought-hardy small tree with edible flowers and strong early pollinator value; formative prune when young to shape a single leader.
How to propagate
Sow seed in spring after cold stratification.
Guidance, not a guarantee — success varies by species and skill.
What to watch out for
Legume family but NON-nodulating - it does NOT fix nitrogen (like carob), so do not rely on it to feed neighbours. Slow to establish and short-lived.
Frequently asked questions about Judas tree
Is judas tree frost-hardy?
Yes for winter cold in many climates — generally hardy to around -15°C when dormant, with medium frost tolerance in the catalog. Flowering crops can still lose a season to late frost, so site them carefully.
What soil does judas tree need?
It does best on loam, rocky ground, at pH about 6–8.
How much water does judas tree need?
Plan for a rainfall floor around 450 mm/year, plus low irrigation once established.
Can judas tree handle wet or waterlogged soil?
Poorly — judas tree has low waterlogging tolerance, so keep it off winter-wet clay and standing water.
What should I watch out for with judas tree?
Legume family but NON-nodulating - it does NOT fix nitrogen (like carob), so do not rely on it to feed neighbours. Slow to establish and short-lived.
Design your line to see how your land fits Judas tree.
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