Stipa is a genus of around 300 large perennial hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and …

Stipa is a neutral grass. Where temperatures get colder than 20 degrees F, the plants should be treated as annuals. Once the grass turns brown it can either be removed immediately or …

The STIPA test signal is a modulated sinusoidal Pink Noise in the octave band range from 125 Hz to 8 kHz. The modulation and range mimics a person’s voice with its varying intensity over time.

Mexican Feather Grass (Stipa tenuissima) is a stunning ornamental grass with slender, silvery-green foliage that dances in the breeze, adding elegance to any garden.

Speech transmission index (STI) is a measure of speech transmission quality. The absolute measurement of speech intelligibility is a complex science.

Sep 28, 2022 · All the stipas grown here in the garden thrive in full sun and a light, free draining soil. Many also give a long display, standing up well to the winter weather. Stipa barbata …

Stipa—a family of frothy feather, needle, and spear grasses—adds structure, texture, and movement to the calmest of landscapes. Stipas are versatile: Plant them en masse, in a long …

Learn all about stipa - choose the best ones to grow, where to buy, where to plant and care advice from RHS experts.

Nov 18, 2019 · Stipa grasses stand out for their tufted, clump formations and long awns, reminiscent of their grass namesakes. Leaves are pleated, rolled, or linear and their flowers …

Stipa – commonly called Feather grass, Needle grass, or Spear grass–is a perennial grass grown for its bright green, narrow, flat leaves and open, airy inflorescences. Stipa imparts feathery …