Lyside Sulphur Kricogonia lyside

Lyside Sulphur

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Lyside Sulphur caterpillar (Kricogonia lyside)

Lyside Sulphur Caterpillar

(Click the caterpillar image to view the life cycle of this caterpillar)

The current rating for guayacan is:

Garden Rating
Nectar Rating
Caterpillar Rating

If you have experience growing guayacan, we would like your opinion. Let us know how it performed in your butterfly garden. Your comments will help other butterfly gardeners in your region to create better butterfly gardens:

Guayacan - Guaiacum angustifolium

Other common names for this plant include Texas lignum-vitae, Soapbush, Iron-Wood

Guayacan is an evergreen shrub (or small tree) that has a dense foliage and gnarled Guayacan or Guaiacum angustifoliabranches. Providing excellent cover for wildlife, guayacan's deep purple-blue, fragrant flowers appear during March through September, often after a rain. Brilliant red seedpods follow the flowers in the fall, making this plant a good choice for general garden use.

Consider using Guayacan as an accent plant or focal point. Planting it along a path where it's fragrance will be appreciated is also a possibility.

Importance as a caterpillar food source: Used by the Lyside Sulphur as it's major food source. The Lyside Sulphur butterfly is a year round resident in the LRGV making it one of the most commonly seen butterflies in the area .

Importance as a butterfly nectar source: This plant is somewhat attractive as a nectar source.

Guayacan Cultural Requirements
USDA Hardiness Zone
Zone 8
Bloom Period
Spring to summer
Bloom Color
Blue to purple
Plant Height
8 to 20 feet
Plant Spread
8 to 20 feet
Light Exposure
Sun to part shade
Soil Moisture
Adaptable, very drought tolerant
Animal/Pest Problems


Guaiacum Native Range

Native Range for Guayacan (Guaiacum angustifolium)