Flowers That Change Colours 

Hydrangea Hydrangeas change colors depending on the acidic content of the soil.

Yesterday Today Tomorrow These flowers bloom violet on the first day (yesterday) take a softer hue and turn lavender (today), which further gets bleached into white on the third day (tomorrow).

Confederate Rose The papery blooms open white in the morning, turn pink by mid-day, and deepen to bold red by the end of the day.

Lantana The anthocyanin pigments in lantana change its red flowers with yellow centers into intense red florals with orange centers upon pollination.

Lungworts The plant produces droopy tubular flowers that last for 6-8 days and change their colors from red to blue midway.

Larkspur The lovely flower spikes display blue florets in an acidic medium, whereas an increase in the pH fades them to pale pink or white.

Four O’Clocks The color-changing phenomenon in Four O’ Clocks is subject to the plant’s maturity due to which the yellow flowers change to dark pink, while the white blooms take a purple hue.

Butterfly Pea Though, these flowers have a blue or white hue, you can change their color by changing the pH of the growing medium.