Heads-up! Our Annual Photo contest will be open for entries this Thursday the 18th!

Alstroemeria, Peruvian Lily, Lily of the Incas 'Third Harmonic'


Family: Alstroemeriaceae
Genus: Alstroemeria (al-stre-MEE-ree-uh) (Info)
Cultivar: Third Harmonic



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade



This plant is resistant to deer

Foliage Color:

Unknown - Tell us


24-36 in. (60-90 cm)


18-24 in. (45-60 cm)


USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Where to Grow:

Unknown - Tell us


Handling plant may cause skin irritation or allergic reaction

Bloom Color:


Gold (yellow-orange)

Bright Yellow

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter

Other details:

May be a noxious weed or invasive

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; stratify if sowing indoors

From seed; sow indoors before last frost

From seed; direct sow after last frost

From seed; germinate in a damp paper towel

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

Fremont, California

Huntington Beach, California

Long Beach, California

San Jose, California

Simi Valley, California

Saint Matthews, South Carolina

San Antonio, Texas

Seattle, Washington

show all

Gardeners' Notes:


On Dec 28, 2015, paddyree from Seattle, WA wrote:

I started with 3 plants, and now have a bed about 3' x 3', so it spreads readily, but I wanted it to fill in. It's a lovely color. The leaves are still green outside here in Seattle (along a south wall) at 39 degrees. I've taken to surrounding the planting with low wire-fencing, so the stalks don't lean over when starting to flower or in wind, and that works well. I still think I prefer A. 'Sweet Laura' to this one, since it has a lovelier yellow + orange coloring, is taller, and stays erect without fencing. Both do well in part shade.


On Dec 18, 2011, suguy from Simi Valley, CA (Zone 9a) wrote:

I collect Alstroemerias and this was one of the first plants I put in.
It is a VERY vigorous cultivar.

The color is brilliant and dazzling in part shade where the blooms hold up longer in a sun-drenched climate like ours.

I recommend putting in some type of root barrier for these -- which can be as simple as a 15-gallon can with its bottom cut out (works well for us for several years).