Repotting guide

When & how to repot Drosera intermedia (Drosera intermedia)

Also called Oblong-leaved Sundew, Spoonleaf Sundew.

More about drosera intermedia

About Drosera intermedia

Drosera intermedia · also called Oblong-leaved Sundew, Spoonleaf Sundew · flowering

Drosera intermedia is a small temperate-to-subtropical sundew with semi-erect, spoon-shaped leaves covered in glistening, sticky tentacles that trap insects. Widespread across North America and Europe, temperate forms need a winter dormancy while subtropical forms grow year-round. It wants bright light, constant moisture, pure water, and acidic peat-sand media.

Mature size: Rosette 3-8 cm across; flower scapes to 10-15 cm.

Watch for — Mineral water damage: Tap water builds up salts and kills the roots. Water exclusively with rain, distilled, or RO.

How to tell drosera intermedia needs repotting

Repotting on a calendar is less reliable than reading the plant. For drosera intermedia, watch for these signs:

Roots spiralling thickly out of the drainage holes or pushing the whole plant up out of the pot.
The pot is so packed that water runs straight through in seconds and barely wets the soil.
It has split a plastic pot, or the rootball is a solid mass with almost no soil left when you slide it out.
Growth and (for drosera intermedia) flowering have clearly stalled despite good light and feeding — but remember this plant likes being snug, so a little crowding alone is not a reason to repot.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot drosera intermedia

Only every 2–4 years, when genuinely crowded. Drosera intermedia is one of the plants that genuinely prefers a snug pot — it grows and flowers better with its roots a little restricted, so resist the urge to repot it on schedule. Small herbaceous perennial rosette with semi-erect oblong leaves on long petioles; temperate forms produce a resting hibernaculum bud in winter..

What size pot to step drosera intermedia up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Drosera intermedia positively prefers a snug pot: it flowers and grows better when the roots are a little restricted. The single biggest repotting mistake here is over-potting — dropping drosera intermedia into a pot two or three sizes up. All that surplus soil holds water the small root system cannot use, stays cold and wet, and rots the roots within weeks. When in doubt, choose the smaller pot.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot drosera intermedia

Early spring, just as new growth restarts, is the ideal window for drosera intermedia. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting drosera intermedia

Confirm it actually needs it. Slide drosera intermedia out and check the roots. Only continue if it is genuinely packed — this plant prefers a snug pot, so if there is still soil and room, put it straight back.
Pick a pot only one size up. Choose a pot just 2–3 cm wider with good drainage. Resist anything bigger; over-potting is the main killer here.
Ease it out gently. Water lightly the day before, then tip drosera intermedia out, supporting the base. Tease the outer roots free only enough to stop them circling.
Repot at the same depth. Add a layer of fresh acidic, nutrient-poor peat and sand mix, set the plant so the soil line sits exactly where it did before, and backfill around the sides, firming lightly.
Settle it in. Water once to settle the soil, then let it sit. Hold off on more water until the top of the soil dries — fresh soil around a small root system stays wet for a while.

Aftercare

Because the new soil holds more water than the old crammed rootball did, ease right back on watering — let the top of the soil dry before you water drosera intermedia again, or you will rot the roots in the very pot you just moved it to. Keep it out of harsh direct sun for a fortnight. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for drosera intermedia

Drosera intermedia wants acidic, nutrient-poor peat and sand mix. Around 1:1 sphagnum peat to silica sand, or live sphagnum moss. No fertiliser or lime — the fine roots scorch in any enriched medium. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting drosera intermedia — frequently asked questions

How often should you repot drosera intermedia?

Only every 2–4 years, when genuinely crowded for drosera intermedia. Only repot drosera intermedia every 2–4 years, and only when it is genuinely root-bound — it flowers and grows best slightly crowded. Step up just one pot size in spring using acidic, nutrient-poor peat and sand mix. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does drosera intermedia need?

When is the best time of year to repot drosera intermedia?

Does drosera intermedia like to be root-bound?

Yes — drosera intermedia genuinely flowers and grows best when slightly pot-bound, so do not rush to repot it. The mistake to avoid is over-potting into a much larger pot: the excess soil stays wet, the roots cannot use it, and the plant rots. Only repot every few years and only one snug size up.

Should you fertilise drosera intermedia after repotting?

Not immediately. Wait about 4 weeks after repotting drosera intermedia. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.