Balcony Harvest

Rose · Medium · 6–8 hours

Strawberry

The only perennial on this list. Plant once, get fruit every June for three or four years from the same pot.

  • Pot size 2 gallons minimum
  • Soil depth 8 inches
  • Spacing 10 inches
  • Days to harvest perennial

Strawberries break the annual-crop pattern and that is their value: a pot planted this spring is still fruiting in three years. Buy bare-root crowns rather than seed — seed-grown strawberries take a year to fruit and rarely match the parent. The critical detail is the crown: it must sit exactly at soil level, no deeper.

How to grow it

  • Plant bare-root crowns in early spring, four weeks before last frost, with the crown at soil surface.
  • Use a pot at least 8 inches deep and 10 inches across per plant; strawberries are shallow but wide-rooted.
  • Pinch off all flowers for the first month after planting. This forces root and runner growth instead of a few small berries.
  • Renew the pot every three years — older crowns produce smaller fruit and crowd themselves out.
  • In cold zones, mulch the pot and move it against a wall for winter.

What goes wrong

  • Birds: they take the ripe fruit first. Net the pot as soon as fruit colors.
  • Grey mould on crowded fruit: remove affected berries and increase airflow.
  • Crown rot: planted too deep. Lift and replant if the centre turns brown.

Harvesting

June-bearing types fruit about four weeks after bloom. Everbearing types give a trickle all summer and a second flush in fall.

  • Pick when fully red to the tip — strawberries do not ripen further after picking.
  • Harvest in the morning and eat or chill the same day.
  • Cut runners off if you want fruit rather than new plants.

Varieties that work in pots

Albion (everbearing) · Seascape · Honeoye (June-bearing) · Mara des Bois

Seed is cheap; the pot and the mix are where the money goes. Links to search results on Amazon are affiliate links — see our disclosure.

Strawberry timing by zone

Windows for a typical garden in each zone. Start indoors = seed tray; Set out = transplant or direct sow into the final container.

Sowing and harvest windows for Strawberry by USDA zone
ZoneStart indoorsSet outDirect sowFall sowHarvest from
3—May 2 – May 12———
4—Apr 17 – Apr 27———
5—Apr 2 – Apr 12———
6—Mar 18 – Mar 28———
7—Mar 4 – Mar 14———
8—Feb 20 – Mar 2———
9—Feb 1 – Feb 11———
10—Jan 18 – Jan 28———
11—Jan 3 – Jan 13———

See the full planting calendar to compare all crops for your zone at once.