Repotting guide

When & how to repot Shield Sundew (Drosera peltata)

Also called shield sundew, shield-leaved sundew.

More about shield sundew

About Shield Sundew

Drosera peltata · also called shield sundew, shield-leaved sundew · houseplant

Drosera peltata is a tuberous sundew widespread across Australia, New Zealand, and parts of Asia, recognised by its distinctive peltate (shield-shaped) leaves held on a wiry, upright stem. Like other tuberous sundews it is winter-active and summer-dormant, but its wide geographic range makes it one of the more adaptable tuberous species for cultivation.

Mature size: 10–40 cm tall in active growth; tuber 0.5–1.5 cm

Watch for — Root rot from waterlogged dormant tuber: Any moisture in the substrate during summer dormancy will kill the tuber. Cease tray watering completely when foliage dies back and store the pot warm and dry.

How to tell shield sundew needs repotting

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

Flowering has tailed off year on year and the clump has become congested and overcrowded.
Lots of leaf and few flowers — a classic sign that shield sundew bulbs or tubers need lifting and dividing.
Bulbs visibly bursting the pot or pushing each other to the surface.
It is the natural dormancy window (foliage yellowed and died back) — the only safe time to lift and split.

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 shield sundew

Lift and divide every 3–4 years once clumps congest. Rather than a true repot, shield sundew is lifted and divided once the clump congests and flowering drops off. Tuberous perennial with a slender, wiry aerial stem reaching 10–40 cm, bearing alternately arranged peltate cauline leaves. Dies fully to a dormant tuber each summer. White or pale pink flowers are borne on lateral or terminal scapes in spring..

What size pot to step shield sundew up to

Pot size matters less than depth and spacing here. When you replant shield sundew, set the bulbs or tubers at the correct depth (a rough guide: two to three times their own height of soil over the top) and space them so they are not touching. A wide, shallow pot suits a clump better than a tall narrow one.

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 shield sundew

The only safe window is dormancy: wait until the foliage has yellowed and died back naturally, lift and divide then, and replant before or at the start of the next growing season. Disturbing shield sundew in full growth or flower sets it back badly.

Step-by-step: repotting shield sundew

Wait for dormancy. Let shield sundew foliage yellow and die back completely. Lifting while it is in growth wastes the energy it is storing for next year.
Lift carefully. Loosen the soil well away from the bulbs/tubers with a fork and ease the whole clump out without spearing them.
Separate the offsets. Gently pull the clump apart into individual bulbs or tubers. Keep only firm, healthy, blemish-free ones.
Replant at the right depth. Reset them in fresh sandy, nutrient-free carnivorous mix at the correct depth and spacing — not touching — so each has room to bulk up.
Water in and rest. Water once to settle them, then keep on the dry side until growth resumes. Do not feed until leaves are actively growing.

Aftercare

After replanting shield sundew, keep the soil barely moist — not wet — until shoots appear; bulbs and tubers rot in cold, saturated soil. Once leaves are growing strongly, resume normal watering. Hold off feeding until the plant is in active growth again.

The right soil mix for shield sundew

Shield Sundew wants sandy, nutrient-free carnivorous mix. A 2:1 ratio of washed coarse sand to plain peat or coir provides the sharp drainage tuberous sundews require. Avoid any fertiliser, organic compost, or added minerals. pH 4.5–6.0. Pot depth is important — tubers can sit 5–10 cm below the surface. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting shield sundew — frequently asked questions

How often should you repot shield sundew?

Lift and divide every 3–4 years once clumps congest for shield sundew. Shield Sundew is lifted and divided, not "repotted". Every 3–4 years, once the foliage has died back and it is dormant, lift the clump, separate the offsets, and replant at the correct depth in sandy, nutrient-free carnivorous mix. Crowding, not pot size, is what reduces flowering over time.

What size pot does shield sundew need?

When is the best time of year to repot shield sundew?

Do you "repot" shield sundew, or lift and divide it?

You lift and divide it. Shield Sundew grows from bulbs or tubers, so instead of repotting you wait for dormancy, lift the congested clump, separate the healthy offsets, and replant them at the right depth and spacing. Doing this every 3–4 years restores flowering.

Should you fertilise shield sundew after repotting?

Hold off feeding shield sundew until it is in active growth again. Fresh soil already carries enough nutrients to get it re-established, and feeding disturbed roots too soon does more harm than good.