Arizona cottontop (Digitaria californica)

Arizona cottontop

This perennial grass forms a clump of stems reaching up to a meter in height. The branching root system can reach one meter deep. There are no rhizomes or stolons. The leaf sheaths around the stems can be very hairy to woolly. The leaves are usually short and narrow. The inflorescence is a dense, narrow panicle containing pairs of woolly-haired spikelets.

Scientific classification

Species

Arizona cottontop (Digitaria californica)

Grasses, sedges and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Grass

Plant Type

Spring, Summer, Fall

Bloom Time

30 cm to 91 cm

Plant Height

Rapid

Growth Rate

Images of Arizona cottontop

Attributes of Arizona cottontop

Growth Rate

Arizona cottontop's rapid growth rate during spring and summer manifests in a swift gain in plant height and expansive production of its distinctive bluish-white, cottontop-like inflorescence. Rapid leaf emergence expands its foliage cover, bolstering its drought resistance while maximizing photosynthesis. Variances in growth rate across seasons suggest a concentrated energy investment in its active growing season.

Care Guide for Arizona cottontop

Every week

Water

Full sun

Sunlight

Water: Arizona cottontop thrives in arid environments with minimal water, requiring weekly watering to avoid soil saturation. As an outdoor grass in open fields and deserts, it successfully adapts to seasonal rain patterns, showcasing a remarkable drought tolerance despite infrequent precipitation.

Fertilize: Arizona cottontop benefits from organic fertilization, enhancing growth with minimal chemical risk. Apply a 2-inch mulch layer in spring, keeping clear of stems to provide nutrients and moisture retention. Fertilization should be reduced in fall and winter, with adjustments for younger plants as needed.

Pruning: Arizona cottontop thrives with proper pruning to enhance growth and health. Prune in early spring before new growth, removing dead stems and thinning clumps for airflow. Regular pruning maintains shape, vigor, and prevents overcrowding, minimizing disease risk while adhering to horticultural guidelines.

Propagation: Arizona cottontop can be propagated effectively by dividing clumps during cooler periods when not actively growing. Separate the root ball into sections, replanting at the same depth. Ensure adequate watering and avoid overcrowding for optimal growth.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free

Learn More About Arizona cottontop

Plant disease auto-diagnose & prevention

AI-powered plant doctor helps you diagnose plant problems in seconds.

Download the App for Free