Mature size & growth rate

How big does Double Bloodroot (Sanguinaria canadensis 'Multiplex') get?

Also called Double Bloodroot, Plena Bloodroot.

More about double bloodroot

About Double Bloodroot

Sanguinaria canadensis 'Multiplex' · also called Double Bloodroot, Plena Bloodroot · flowering

Double Bloodroot is a long-cultivated double-flowered form of Sanguinaria canadensis bearing spectacular, fully double white flowers resembling small waterlilies. Because it lacks functional reproductive parts, flowers last two to three times longer than the single form — often 2–3 weeks. It is sterile and must be propagated by rhizome division.

Mature size: 15–20 cm tall in flower; slow-spreading clump to 30–40 cm wide over many years

Indoor size vs how big it gets in the wild

Double Bloodroot is a naturally small plant — it stays shelf- and desk-sized for its whole life, so it never becomes a space problem. Indoors and in a pot, expect 15–20 cm tall in flower. In the ground with no restriction it is a completely different plant — slow-spreading clump to 30–40 cm wide over many years — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

It grows mostly by adding leaves, offsets or a slightly wider rosette rather than gaining height — the footprint barely changes year to year.

Growth rate and years to mature

Double Bloodroot is a slow grower. Realistically, expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Its feeding profile backs this up: top-dress with balanced slow-release fertiliser (e.g. 10-10-10) as shoots emerge in early spring, or apply composted leaf mould in autumn. do not feed during dormancy. this cultivar requires more resources to produce the larger double flowers.

Want this turned into the right next pot at the right moment? The pot size calculator and the double bloodroot repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast double bloodroot grows.

How to keep double bloodroot smaller

Good news — double bloodroot barely needs managing. If you do want to keep it tidy:

You rarely need to do anything: double bloodroot is so slow that it can sit in the same small pot for years.
Keeping it slightly pot-bound and easing back on feed naturally caps the size.
Pinch or remove the oldest, tiredest leaves so energy goes into a compact, fresh-looking plant.

How to grow double bloodroot bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for double bloodroot the accelerators are:

Move it to brighter (but not scorching) light — that is the single biggest growth lever for a small plant.
A small step up in pot size every couple of years gives the roots a little more room without triggering a size jump.
Feed lightly through the growing season; this plant simply will not race however hard you push it.

Light is almost always the ceiling. The double bloodroot light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When double bloodroot outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for double bloodroot:

Roots circling the bottom or pushing out of the drainage hole — it wants a pot one size up, not a bigger room.
Offsets crowding the surface so the original plant looks squashed.
Honestly, double bloodroot rarely outgrows a room — outgrowing its pot is the only realistic limit.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the double bloodroot repotting guide. If you want more of this plant instead of a bigger one, the double bloodroot propagation guide turns prunings into new plants.

Double Bloodroot size — frequently asked questions

How big does double bloodroot get?

Double Bloodroot reaches 15–20 cm tall in flower when grown indoors, and far larger where it grows unrestricted (slow-spreading clump to 30–40 cm wide over many years). It grows mostly by adding leaves, offsets or a slightly wider rosette rather than gaining height — the footprint barely changes year to year.

Is double bloodroot slow or fast growing?

Double Bloodroot is a slow grower. Expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Double Bloodroot is a naturally small plant — it stays shelf- and desk-sized for its whole life, so it never becomes a space problem.

How long does double bloodroot take to reach full size?

Roughly many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Light, pot size and feeding move that timeline more than anything else.

How do I keep double bloodroot smaller?

You rarely need to do anything: double bloodroot is so slow that it can sit in the same small pot for years. Keeping it slightly pot-bound and easing back on feed naturally caps the size. Pinch or remove the oldest, tiredest leaves so energy goes into a compact, fresh-looking plant.

How can I make double bloodroot grow bigger or faster?

Move it to brighter (but not scorching) light — that is the single biggest growth lever for a small plant. A small step up in pot size every couple of years gives the roots a little more room without triggering a size jump. Feed lightly through the growing season; this plant simply will not race however hard you push it.