Mature size & growth rate

How big does Daylily 'Frans Hals' (Hemerocallis 'Frans Hals') get?

Also called Frans Hals Daylily, Bicolor Daylily.

More about daylily 'frans hals'

About Daylily 'Frans Hals'

Hemerocallis 'Frans Hals' · also called Frans Hals Daylily, Bicolor Daylily · flowering

Frans Hals is a striking bicolour daylily with orange outer petals and contrasting rusty-red inner petals above a yellow throat. A vigorous mid-season bloomer on 70 cm scapes, it is one of the most recognisable daylily cultivars. Named after the Dutch Golden Age painter. TOXIC — all Hemerocallis are potentially deadly to cats.

Mature size: 65-75 cm tall; clumps spread 60-80 cm wide

Watch for — Tall scapes flopping: In shaded or overly fertile conditions, scapes elongate and fall over. Stake or move to full sun; reduce nitrogen fertiliser.

Indoor size vs how big it gets in the wild

Daylily 'Frans Hals' stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward. Indoors and in a pot, expect 65-75 cm tall. In the ground with no restriction it is a completely different plant — clumps spread 60-80 cm wide — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Growth rate and years to mature

Daylily 'Frans Hals' is a fast grower. Realistically, expect two to four years from a young plant to a room-filling specimen in good light. Its feeding profile backs this up: feed with a balanced 10-10-10 fertiliser in early spring as new growth appears. a second application in mid-season supports strong scape development. potassium-rich feeds in late summer harden the plant for winter.

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

How to keep daylily 'frans hals' smaller

You are not stuck with the maximum size. For daylily 'frans hals' specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting daylily 'frans hals' is the main way to control its spread and refresh it.
Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump.
Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

The keep-it-smaller method, step by step

Lift the whole plant. Slide daylily 'frans hals' out of its pot in spring when the clump has filled it.
Split the clump. Tease or cut the rootball into two or more sections, each with healthy roots and growth.
Repot one division. Put a single division back in the original pot to reset it to a smaller size; pot or give away the rest.
Remove offsets as they form. Through the year, detach new runners or pups to stop it spreading again.

How to grow daylily 'frans hals' bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for daylily 'frans hals' the accelerators are:

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger.
Good light plus regular feeding maximises offset and runner production.
Leave plantlets and offsets attached and feed through the growing season for the fastest spread.

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

When daylily 'frans hals' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for daylily 'frans hals':

The clump bulging over the pot rim or splitting the pot — the cue to divide, not to find a bigger room.
A dense centre that goes bare or tired while the edges keep spreading.
Runners or offsets escaping across the shelf or into neighbouring pots.

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

Daylily 'Frans Hals' size — frequently asked questions

How big does daylily 'frans hals' get?

Daylily 'Frans Hals' reaches 65-75 cm tall when grown indoors, and far larger where it grows unrestricted (clumps spread 60-80 cm wide). Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Is daylily 'frans hals' slow or fast growing?

Daylily 'Frans Hals' is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Daylily 'Frans Hals' stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward.

How long does daylily 'frans hals' take to reach full size?

Roughly two to four years from a young plant to a room-filling specimen in good light. Light, pot size and feeding move that timeline more than anything else.

How do I keep daylily 'frans hals' smaller?

Divide the clump every year or two — splitting daylily 'frans hals' is the main way to control its spread and refresh it. Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump. Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

How can I make daylily 'frans hals' grow bigger or faster?

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger. Good light plus regular feeding maximises offset and runner production. Leave plantlets and offsets attached and feed through the growing season for the fastest spread.