Understanding Our Daylily Plant Codes

Each daylily cultivar is labeled with a set of plant codes that describe its characteristics — including bloom time, height, foliage type, and more. These codes help gardeners quickly understand what to expect from a plant.

If you’re new to daylilies, don’t worry — you don’t need to know every code to choose a plant you’ll love. This guide is here as a helpful reference whenever you’re curious or want more detail.

Example Code Breakdown:

Just Plum Happy T 20” M D Re Ext 4.5”

Here’s what that means:

  • T → Tetraploid

  • 20” → Height of the scape (flower stem)

  • M → Mid-season bloom

  • D → Dormant foliage

  • Re → Has potential to rebloom

  • Ext → Extended bloom (lasts longer than 18 hours)

  • 4.5” → Bloom size (flower diameter)

Plant Code Reference Guide

Ploidy

T — Tetraploid

cultivar without is a diploid

Foliage Type

D — Dormant
SE — Semi-evergreen
EV — Evergreen

Fragrance

F — Fragrant
VF — Very Fragrant

Scape Height

20” — Height of the flower stem (measured in inches)

Rebloom

Re — Has potential to rebloom (second bloom season)

Bloom Size

4.5” — Diameter of the bloom (measured in inches)

Bloom Season

  • EE — Extra Early

  • VE — Very Early

  • EM — Early Mid

  • M — Mid-season

  • ML — Mid Late

  • L — Late

  • FB — Free bloomer (blooms any season, non-reblooming)

Bloom Duration

Ext — Extended bloom (lasts longer than 18 hours)

OE — Opens in the evening

Plant Quantity

SF - Single Fans | One Plant
DF - Double Fans | Two Plant

A Helpful Note

These codes are meant to be a guide, not a rulebook. Bloom times, rebloom potential, and plant performance can vary based on weather, location, and growing conditions.

If you ever have questions about a specific cultivar or need help choosing the right plant, we’re always happy to help.

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