Veronica spicata 'Royal Candles'
Botanical name: Veronica sp.
Common name: Speedwell
Family: Plantaginaceae
USDA Plant Hardiness Zone Map
It forms a low bushy mound of dark green leaves, bearing short spikes of bright blue flowers in early summer for several weeks.
Link to this plant:
https://toptropicals.com/catalog/uid/veronica_sp.htm