Plant
rose companions at least one foot away from your
roses so that you do not disturb their roots.
Do you know what you want to choose?
I found this:
"Many sun-loving annuals such as heliotropes (Heliotropium), summer-snapdragon (Angelonia), lantana (Lantana), verbena (Verbena) and million bells petunia (Calibrachoa) hold up well throughout the summer and fill the space among
roses nicely. They all have modest water requirements and will benefit from the heavy feeding regime that
roses demand.
Herbs and other aromatic plants make wonderful
rose companions. Scented geraniums (Pelargonium), rue (Ruta), feverfew (T anacetum), parsley (Petroselinum), and thyme (Thymus) all may help ward off Japanese beetles and aphids. Marigolds (Tagetes) may also repel pests and encourage growth. Try ornamental and culinary sage (Salvia), anise-hyssop (Agastache), Russian-sage (Perovskia), lavender (Lavandula), yarrow (Achillea), oregano (Origanum), catmint (Nepeta) and calamint (Calamintha). Oddly enough, tomatoes allegedly prevent black spot, but not many people will be inclined to combine
roses and tomatoes. Lavender (Lavandula) and catmint (Nepeta) are good at keeping rabbits away. Four-o’ clocks (Mirabilis) and larkspur (Consolida) are said to act as decoys by attracting
rose-loving Japanese beetles to eat their poisonous leaves. Yarrow (Achillea) may attract ladybugs who in turn feed on aphids."