Famous People Named Marit. Mette Marit, Crown Princess of Norway. Marit Elisabeth Larsen, Norwegian singer-songwriter and former member of the pop duo M2M. Marit Eli Paulsen, Swedish politician. Marit Elisabeth Maij, Dutch politician.
Japanese beetles (Popillia japonica), also known as the chafer beetle, rose chafer and garden chafer; aphids (Macrosiphum rosae), also known as plant lice; thrips (Anaphothrips obscurus or Frankliniella tritici), also called grass thrips or oat bugs, and the rose leaf hopper are all insects that can do various levels of damage to a rose bush.
Treat the Knock Out roses with a fungicide. If you are close to zone 5a, use a dustible fungicide. In warmer zones, using a liquid fungicide is fine. Add a 2- to 3-inch thick layer of mulch around the base of each Knock Out rose plant. Keep the mulch away from the canes. The mulch will keep the ground temperature even.