Beautiful, colorful landscaping! The tall grass is purple fountain grass (Pennisteum sectaceum 'Rubrum'), available from bustaniplantfarm.com (image credit). Looks like coleus and purple heart, and maybe begonias?
Purple Fountain Grass 'Rubrum' - Popular, drought tolerant grass forms neat clumps of purplish maroon blades. Topped by rose red flower spikes summer through fall. Beautiful as landscape specimen or planted in groups. Perennial in warm climates. NOTE: While Pennisetum setaceum is considered invasive to CA, the species ‘Rubrum,’ ‘Fireworks,’ and ‘Skyrocket’ are not invasive and safe for California gardening efforts. When Monrovia recognizes a new plant is invasive, it will not grow it.
Pennisetum setaceum Rubrum • Lavender Fountain Grass ~ hardy to 20 degrees, full sun to partial shade, blooms red to maroon from late spring to fall, provides winter interest, average water needs, drought tolerant, suitable for xeriscaping