Growing Strawberries Hydroponically Indoors (Step by Step)

Strawberries are the most rewarding plant we grow indoors. Done right, you'll pick warm, fragrant berries from December through March — the months the supermarket version tastes like wet styrofoam.

Pick the right variety

Choose day-neutral varieties like Albion, Seascape, or Mara des Bois. Skip June-bearers — they fruit once and sulk for the rest of the year.

The right system

Strawberries hate wet crowns, which rules out true Kratky. A Dutch bucket, NFT channel, or vertical tower with enough room for the crown to stay dry all work beautifully.

Light

Aim for a DLI of 17–22 mol/m²/day. That's roughly a 100W full-spectrum LED 16 hours a day over a 2x2 ft footprint.

Feeding

Strawberries are heavy feeders once flowering. Run EC 1.4 mS/cm during vegetative growth, then bump to 2.0–2.2 at flowering with a bloom-leaning nutrient. Keep pH at 5.8–6.0.

The pollination trick

Indoor strawberries don't have bees. Every other day during flowering, brush each open flower for two seconds with a small soft paintbrush. Skip this and you'll get tiny, misshapen berries.

Timeline to fruit

• Weeks 1–4: Establish from runner or plug.
• Weeks 5–8: First flowers (pinch them off to build the plant).
• Weeks 9+: Let flowers set fruit. First ripe berries 4–6 weeks later.

Common failures

• Crown rot from planting too deep — keep the crown above the medium.
• Tiny berries from no pollination or poor calcium.
• Pale leaves from running pure RO water without Cal-Mag.

Frequently asked questions

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