Drummond phlox 'Classic Cassis'

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Classic Cassis is thought of as half hardy, so although it can survive a small mild cold snap, it is wise to ensure that this plant is protected from frost damage. A soil ph of between 6.1 and 7.8 is ideal for Classic Cassis as it does best in weakly acidic soil - weakly alkaline soil.

By our calculations, you should look at sowing Classic Cassis about 49 days before your last frost date.

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