Elderberry
Sambucus nigra
Also known asEuropean elder (S. nigra) · American elder (S. canadensis) · Black elder · Sambuca · Holunder
Environment
The bounded range this crop tolerates.
Climate and zones
- USDA zones
- 3–9 (winter low around -40°C)
- Frost
- very hardy (survives deep cold)
- Season
- cool (spring/fall)
Growing systems
Root mass: heavy. Thin-channel systems can't hold this crop.
Growing media
| Medium | pH effect | Retention | Bacterial surface |
|---|---|---|---|
| Soil-based mix (Potting soil) | varies | high | high |
Nutrient demand by stage
NPK ratios are relative weights. EC targets shift through the plant's life.
| Stage | N | P | K | EC (mS/cm) |
|---|---|---|---|---|
| seedling | 2 | 1 | 1 | 1 |
| vegetative | 2 | 1 | 2 | 1.4 |
| flowering | 1 | 1 | 2 | 1.6 |
| fruiting | 1 | 1 | 2 | 1.6 |
Aquaponics suitability
Not recommended
Fish waste alone doesn't supply enough of what this crop demands. Grows in hybrid systems with supplemental dosing, but expect active management.
Care notes
A large shrub (2–4 m) best suited to outdoor aquaponics integration rather than indoor hydroponics. The plants are vigorous, fast-growing, and tolerate a wide range of soil conditions. For container growing near aquaponic systems, use 40 L containers and irrigate with nutrient-rich effluent. EC 1.5-2.5 mS/cm. pH 5.5-6.5. Temperature: adaptable (USDA zones 3-9 depending on species). Full sun to partial shade (DLI 14-22 mol/m2/day). Self-fertile varieties exist, but planting two different cultivars improves berry set through cross-pollination. Fruiting begins in the second year from nursery stock. Each mature bush produces 3–8 kg of berries annually (clusters are harvested whole and stripped from the stems with a fork). The berries freeze well and are typically processed rather than eaten fresh. For elderflower harvest, pick the flower clusters in early summer when fully open and fragrant. Elderberry syrup is the primary home product: simmer berries with water, strain, add honey and optional spices (ginger, cinnamon, cloves). The syrup stores refrigerated for 2-3 months or frozen for 12+ months.
Notable varieties
| Cultivar | Type | Origin | Days | Notes |
|---|---|---|---|---|
| Adams | open pollinated | New York Agricultural Experiment Station, 1926 | 365 | American elder (S. canadensis), the most-planted commercial variety in eastern US. Vigorous, large clusters, reliable productivity. Plant Adams + York for cross-pollination boost. |
| York | open pollinated | 365 | American elder companion to Adams. Slightly later season; planting both extends the harvest window. | |
| Black Lace | open pollinated | East Malling Research, UK, 2003 | 365 | European S. nigra with dark purple-black foliage (decorative). Pink flowers. The 'ornamental edible' that fits into landscape beds without looking utility. |
| Bob Gordon | open pollinated | USDA / University of Missouri | 365 | American elder, downward-hanging clusters (which makes them less accessible to birds). Productive; popular for commercial supplement-grade fruit production. |