Buy Flowers › Veronica gentianoides 'Romona Blue Streak' - 4" Pot Veronica gentianoides 'Romona Blue Streak' - 4" Pot $7.00 Upright spikes of pale blue, plant resembles penstemons with small flowers like speedwell, likes moist soils, 15-20”, zone 4-7 Add To Cart Added! Upright spikes of pale blue, plant resembles penstemons with small flowers like speedwell, likes moist soils, 15-20”, zone 4-7