Iris 'Happy Birthday'

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Happy Birthday is thought of as very hardy, so this plant will tend to survive through freezing conditions. A soil ph of between 6.1 and 7.8 is ideal for Happy Birthday as it does best in weakly acidic soil - weakly alkaline soil.

Try to aim for a seed spacing of at least 1.19 inches (3.05 cm) and sow at a depth of around 0.99 inches (2.55 cm).

As Happy Birthday is very hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.