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Raspberry · Cane fruit

Raspberry

Raspberry ×2

Summer
Raspberry — Young Young
Seedling / just planted

New raspberry cane (Rubus idaeus) emerging in early spring, held in hand to show scale of the young shoot with first compound leaves

Photo: gerardbertrand· CC BY

Raspberry — Growing Growing
Established, filling in

Raspberry plant in flower, drooping white five-petaled blossoms among the toothed compound leaves

Photo: Benoit Renaud· CC BY

Raspberry — Full grown Full grown
What you’re aiming for

Ripe red raspberries (Rubus idaeus) clustered on the cane, ready for harvest

Photo: Эдуард· CC BY-NC

Growing stages

What to look for, and what to do, at each point in its life

Raspberries in Decatur run on a two-year cane cycle: new green primocanes grow all season, overwinter (for summer-bearing types) as woody floricanes that bloom and fruit the next year, then die — so the planting is a constant rotation of cutting out spent canes and thinning new ones, with harvest windows in early summer and/or fall depending on type.

  1. 1

    Primocane Emergence

    Mar - Jun

    You'll see New canes push up from the base and roots as thin, bright green, flexible shoots with soft thorns and small compound leaves, growing quickly — several inches a week in good weather.

    Do Let them grow; thin out the weakest ones once a cluster of canes gets crowded.

  2. 2

    Primocane Maturation

    Jun - Sep

    You'll see Canes reach full height (4-6 feet), bark begins to toughen and dull from bright green to a duller green-brown, and lateral side-shoots start to form near the top.

    Do Tip-prune primocanes once they reach about 30-36 inches to encourage branching, and tie tall canes to a trellis wire.

  3. 3

    Dormancy (Floricanes Overwinter)

    Late Nov - Feb

    You'll see Bare, woody, brown canes stand through winter. Older floricanes (canes that grew last year) look thicker and grayer-brown than younger green-brown primocanes right next to them in the same clump.

    Do Do the main structural pruning now for summer-bearing types; cut everything to the ground for fall-bearing types grown as an annual-cut system.

  4. 4

    Bloom

    Overwintered floricanes: Apr-May. Primocane-fruiting tips: Jul-Aug

    You'll see Small white five-petaled flowers cluster where leaves meet the cane, opening in succession along each fruiting lateral.

    Do Leave pollination to bees; keep soil consistently moist through bloom.

  5. 5

    Green Fruit

    2-4 weeks after bloom

    You'll see Small, hard, pale green berry clusters form where flowers were, gradually swelling and turning from green to a light straw color before coloring up.

    Do Keep even moisture and mulch to conserve it; net if birds are a problem.

  6. 6

    Ripening & Harvest

    Summer-bearing: Jun. Fall-bearing: Sep-Oct (light frost tolerant)

    You'll see Berries pass from green to pink to fully red (or gold/black depending on variety), plumping up and developing a slight dull sheen when ripe rather than looking hard and glossy.

    Do Pick every 2-3 days by gently pulling — a ripe berry slides off its white core (receptacle) easily, leaving the core on the plant.

  7. 7

    Post-Harvest Cane Removal

    Right after each cane finishes fruiting

    You'll see Fruited floricanes look spent: duller bark, dried fruit stems (strigs) left where berries were picked, and often some leaf yellowing, while nearby primocanes are still green and vigorous.

    Do Cut every floricane that just finished fruiting down to the ground, ideally within a few weeks of the last pick.

  8. 8

    Propagation

    Tip-layering: Aug-Sep. Suckers: dormant season or early spring

    You'll see Long primocane tips arching down and touching soil will naturally root where they touch, forming a small plantlet with its own roots by fall. Root suckers pop up as new canes several inches to a few feet from the parent plant, connected underground.

    Do Bury an arching tip 3-4 inches deep to root it, or dig and transplant rooted suckers.

Techniques — transplant, prune, propagate, divide, seed

Sun

Full sun

Water

Even moisture during fruiting.

Spacing

Give canes room and support.

Feeding

Moderate spring feeding.

Care

  • Know your type: summer-bearing fruits on second-year canes; everbearing fruits on first-year tips.
  • Prune out spent/dead canes annually to keep airflow and yield.

Harvest

Pick when berries slip off the core easily.

Watch for

Cane diseases and spreading suckers — thin and tidy yearly.