Flower spikes of lavender, Lavandula angustifolia Blue Cushion.

Common Water Hyacinth, Eichornia crassipes. Spikes of pale blue flowers of water plant considered invasive outside native habitat.

Hollyhock, Alcea rosea cultivar. Flower spikes with pink flowers against blue sky. Thailand, Chiang Mai, San Kamphaeng,

Our Lords candle, Hesperoyucca whipplei. Spikes of creamy yellow flowers extending from rosette of stiff, spine tipped leaves. USA, California, Sequoia National Park,