Mature size & growth rate

How big does Daylily 'Mary Todd' (Hemerocallis 'Mary Todd') get?

Also called Mary Todd daylily.

More about daylily 'mary todd'

About Daylily 'Mary Todd'

Hemerocallis 'Mary Todd' · also called Mary Todd daylily · flowering

Hemerocallis 'Mary Todd' is a large-flowered early-season daylily with bold, ruffled golden-yellow blooms and a rich yellow throat. It is a vigorous, reliable performer in full sun borders. All daylilies are extremely toxic to cats, capable of causing fatal kidney failure. Keep away from households with cats.

Mature size: 65-75 cm tall in flower, clumps spreading to 60-75 cm wide

Watch for — Aphids: Soft-bodied insects congregating on new growth and flower stems; dislodge with water or treat with insecticidal soap. Natural predators such as ladybirds provide good biological control.

Indoor size vs how big it gets in the wild

Daylily 'Mary Todd' 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 flower, clumps spreading to 60-75 cm wide. A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

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 'Mary Todd' 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 fertiliser (such as 10-10-10) in early spring as growth resumes. apply a second feed with a low-nitrogen, bloom-boosting formula before the first flower scapes emerge. avoid heavy feeding after midsummer.

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

How to keep daylily 'mary todd' smaller

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

Divide the clump every year or two — splitting daylily 'mary todd' 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 'mary todd' 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 'mary todd' bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for daylily 'mary todd' 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 'mary todd' light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When daylily 'mary todd' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for daylily 'mary todd':

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 'mary todd' repotting guide. If you want more of this plant instead of a bigger one, the daylily 'mary todd' propagation guide turns prunings into new plants.

Daylily 'Mary Todd' size — frequently asked questions

How big does daylily 'mary todd' get?

Daylily 'Mary Todd' reaches 65-75 cm tall in flower, clumps spreading to 60-75 cm wide when grown indoors. 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 'mary todd' slow or fast growing?

Daylily 'Mary Todd' is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Daylily 'Mary Todd' 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 'mary todd' 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 'mary todd' smaller?

Divide the clump every year or two — splitting daylily 'mary todd' 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 'mary todd' 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.