Blue sage

Blue sage, also known as Eranthemum pulchellum, is a tender herbaceous perennial often grown as a houseplant or annual in the UK. It produces striking cobalt-blue flower spikes and attractive dark green foliage. In gardens, it's best suited for conservatories or sheltered, warm borders in frost-free areas.

Sun: Partial shade.

Soil: Moist but well-drained.

Hardiness: H1B.

Flowering: Jan, Feb, Mar, Apr, Nov, Dec.