The roots are very shallow so when cultivating or weeding it should be done very carefully. Will reseed profusely, if the conditions are right, so the seeds should be collected when ripe and any seedlings removed or transplanted.
Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Red Heart is thought of as hardy, so this plant will survive close to or on freezing temperatures. Red Heart requires a soil ph of 6.6 - 7.5 meaning it does best in weakly acidic soil - weakly alkaline soil.Red Heart Althea
1 www.allseason plants.com