sweet briar

Photo: Dontreya — CC BY-SA 4.0 · source

Survives zone 4 through 8

Harvest calendar

Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.

Sweet briar (eglantine) is, alongside dog rose, one of the two classic European wild sources of vitamin-C-rich rosehip syrup, but is most easily told apart in the garden by its apple-scented foliage. Outside Europe it has become a documented invasive weed in parts of South America, Australia, New Zealand, and South Africa, a genuine caution for anyone growing it outside its native range. ⚠ Deseed the hips before eating: the ring of stiff hairs around the seeds is a gut and skin irritant, and is what old-fashioned itching powder was made from. Strain it out of any purée or syrup.

Hardiness

Zone 4–8

Habit

Shrub

Edible part

Fruit

Ripens

Summer–autumn

Mature size

Dense shrub 1–3 m; foliage apple-scented when crushed or after rain

Light

Full sun

Soil pH

6.0–7.0 (near-neutral)

Environment

Temperate

Native range

Most of Europe except the extreme north (above about 61°N), together with Madeira and the Canaries; Kew stops the native range there, while other floras extend it into western Asia — Turkey, the Caucasus and Iran. Found in pastures, thorny scrub, and montane-to-subalpine habitats, including chalk grassland. ⚠ Aggressively invasive well outside that range, notably in Australia, New Zealand, Argentina, Chile and South Africa.

Status

Both wild and cultivated

Years to fruit

2–4 yrs

Growth speed

Medium.

Spacing

200 cm (79 in) apart — about 4 m² (43 sq ft) per plant

Leaf shape

Pinnately compound leaves 5–9cm long with 5–9 rounded-to-oval, serrated leaflets covered in glandular hairs that give off a distinct apple scent when crushed. Stems are densely covered in numerous hooked prickles.

Root system

Suckering — spreads by root suckers in addition to prolific seed dispersal, the combination of which underlies its invasive behavior in the Southern Hemisphere regions where it has escaped cultivation.

Fruit description

Hips are globose to oblong, 10–20mm in diameter, ripening red and persisting well into winter. Flesh is thin around the numerous seeds; flavor is tart and best after a frost. Like Rosa canina, sweet briar was historically harvested commercially — including during WWII — as a European wild source of vitamin C for syrup-making.

Propagation

Rose seed often takes two years to germinate. This can be shortened by scarifying seed and warm-stratifying it 2–3 weeks in damp peat at 27–32°C, then cold-stratifying 4 months at 3°C; alternatively stored seed can be cold-stratified 6 weeks at 5°C and sown early, or green seed sown immediately. Also propagated by half-ripe cuttings in July, hardwood cuttings 20–25cm long in early autumn, layering, and division of root suckers.

Pollination

Pollinated by bees, flies, and Lepidoptera (moths and butterflies); no additional hip-set requirements beyond its general self-fertility are documented.

The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.