Hemerocallis

Culture Sheet

Growing Temperature:

60-68° F

Holding Temperature:

50-60° F

Soil PH:

6.0-6.5

EC (What is EC?):

2.0-3.0 pour through method

Fertility:

Fertilizing is not necessary during the first few weeks of production. Actively growing daylilies are moderate feeders. Apply a controlled release fertilizer incorporated at a rate of 1 lb of nitrogen per yard of growing meda, or 50-100 ppm nitrate delivered under a constant liquid fertilizer program.

Pests & Diseases:

Aphids, spider mites, and thrips are the most common pests. Crown rot sometimes occurs after overwintering. Cool, wet weather may bring on fusasium or rhizoctonia. There are also a few leaf spot and leaf streak foliage diseases that may be found.
In warmer climates, a daylily rust called Puccinia hemerocallidis can be a problem. This rust does not overwinter in our zone 5 Michigan climate and is therefore not a problem for daylilies which are purchased from Walters Gardens, Inc.

Potting & Timing:

Root Trimming: Prune roots according to pot depth. It's best to prune the roots rather than to scrunch them into the pot.

Moisture:

For potting soil use commercial potting media. Water thoroughly after potting, and keep evenly moist until plants are established. Allow the substrate to dry out between waterings once plants are established.

Planting Level:

Cover the crown with about 1 inch of potting medium.

PGRs/Pinching:

Drench with Sumagic at 1 ppm when grown under greenhouse conditions.

Lighting:

Grow under high light conditions.

Other Comments:

Late summer planting has the distinct advantage of producing bigger plants with more flowers. Allow at least 6-8 weeks for rooting before temperatures remain below freezing. Avoid fertilizing at this time.