Roses are the most loved garden flower in the world, and they earn it: no other shrub flowers so generously, smells so good, and comes in so many forms, from tiny patio roses to great climbing roses that cover a wall. A rose planted well and pruned once a year will flower for decades, and a vase of home-grown roses is something a shop bouquet can never match.
Roses have a reputation for being difficult, and it is mostly undeserved. What they really need is sun, air and food: a sunny spot with good air movement, fertile soil, regular feeding in the growing season, and a yearly prune. Give them those four things and most roses look after themselves. The rest — choosing varieties, dealing with black spot, deadheading — is detail you pick up as you go.
Roses at a glance
| Growing factor | What roses need |
|---|---|
| Sun | full sun |
| Soil pH | 6.0–6.5 |
| Days to germination | 14–28 |
| Days to maturity | 365–730 |
| Spacing | 24–36 inches apart |
| Water needs | moderate |
| Cold tolerance | hardy |
| Family | Rosaceae |
Starting seeds
Roses give you a choice: start seeds indoors for earlier flowers, or sow direct once the soil warms. For the earliest display, sow indoors a few weeks before your last frost — late winter in Zones 3–5, early spring in Zones 6–8, late winter in Zones 9–10 — and transplant out after the frosts end. For direct sowing, wait until the soil is workable and warming: late spring in Zones 3–5, mid-spring in Zones 6–8, early spring in Zones 9–10. Zones 11–13 are frost-free, so both methods work through much of the year; check your local extension service for the best local dates. Seeds germinate in 14–28 days. Keep seed mix or soil evenly moist until seedlings are up, and give indoor seedlings as much light as you can. Our seed starting calculator plans your indoor sowing date, and the germination time calculator estimates when to expect seedlings.
Transplanting and planting out
Transplant seedlings out after the last frost, on a cloudy day or in the evening so they do not wilt in the sun. Space plants 24–36 inches apart — that spacing is what keeps air moving and disease down — and water each plant in well. Our plant spacing calculator works out exactly how many plants fit your bed, and the square foot garden planner helps lay them out.
Soil and feeding
Roses grow best in fertile, well-drained soil with a pH of 6.0–6.5. Dig in compost before planting — it feeds the soil and helps it hold moisture without getting soggy — and mulch after planting to keep the roots cool and the weeds down. Feed during the growing season with a balanced fertiliser at the label rate, roughly once a month while plants are actively growing, and stop feeding as the season ends. Our fertiliser calculator works out the right amount for your bed, and the compost ratio calculator helps you make good compost to dig in.
Watering
Roses have moderate water needs: keep the soil evenly moist while plants are establishing and flowering, and water deeply rather than little and often so the roots grow down. Water at the base in the morning so the foliage dries during the day, mulch to hold moisture in, and watch for wilting in hot, dry spells. Our watering calculator gives a starting point for your bed size, and the watering schedule generator can build a routine around it.
Sunlight and temperature
Roses need full sun — at least six hours of direct sun a day. Roses are hardy and tolerate frost and cold weather well, so they can be planted out earlier and left in the ground over winter in most zones. In frost-free Zones 11–13, heat and a lack of winter chill can limit performance, so give them the coolest spot you have. Check your zone with the hardiness zone finder before choosing varieties. Our sunlight calculator can check whether your spot gets enough sun.
Pests and diseases
The pests and diseases to watch for on roses are aphids, Japanese beetles, black spot, spider mites. Aphids cluster on buds and shoot tips in spring, Japanese beetles chew flowers in summer in some regions, and black spot is the most common disease. Spider mites can appear in hot, dry weather. Good air flow and morning watering prevent more problems than any spray. Check plants weekly, looking under leaves as well as on top, and act early. Hand-pick larger pests, knock aphids off with a strong spray of water, and remove badly affected leaves. Keep the area weed-free and avoid wetting the foliage when you water, since damp leaves invite fungal disease. Our pest identifier helper can help identify what you are seeing, and the plant disease checker helps narrow down leaf and stem problems.
Companion plants
Good companions for roses are garlic, lavender, marigolds, catnip, chives. Garlic, lavender, marigolds, catnip and chives are classic rose companions: garlic and chives are traditionally planted to help deter aphids, lavender draws pollinators, and marigolds help with soil pests. Our companion planting finder can suggest more pairings for your bed plan.
Harvesting
Cut roses for the vase when the buds are showing colour and just starting to open — a bud cut too early will not open, and a flower cut fully open will fade fast. Cut in the morning, cut back to a leaf with five leaflets, and put stems straight into water. Deadhead spent flowers through the season, cutting back to the first strong leaf, and the bush will keep producing new blooms. Stop deadheading in late summer on shrub roses you want to set hips. Our harvest date calculator can estimate your picking date from your sowing date, and the vegetable yield estimator helps you work out how much a bed will produce.
Common problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Black spot on leaves | fungal disease spread by wet leaves | Improve air flow, water at the base, and remove affected leaves. |
| Aphids on buds | sap-sucking insects on soft growth | Spray them off with water or pinch out badly affected tips. |
| No flowers | pruned at the wrong time, or too much shade | Prune in late winter and make sure the bush gets full sun. |
Black spot on leaves
Black spot shows as black spots with yellow edges on the leaves, which then drop. It spreads in wet conditions, so water at the base in the morning, space bushes at the 24–36-inch spacing in the table, and pick up fallen leaves rather than leaving them to rot under the bush. Prune for an open centre so air moves through.
Aphids on buds
Aphids cluster on rose buds and young shoots in spring, and the buds open distorted. A strong spray of water knocks most of them off, and ladybirds usually arrive within days to finish the job. Avoid spraying broad insecticides, which kill the ladybirds too.
No flowers
A rose that grows well but never flowers is usually in too much shade, or was pruned after it set its flower buds. Roses need at least six hours of direct sun, and most types are pruned in late winter before growth starts — check the type you have, because once-flowering old roses are pruned after flowering, not before.
Frequently asked questions
How long does it take to grow roses?
From planting to maturity takes 365–730 days — about 1–2 years (365–730 days from planting). Seed germination takes 14–28 days, and the total time depends on whether you start from seed, a nursery plant, or a bulb or cutting.
How far apart should I plant roses?
Space roses 24–36 inches apart. That spacing gives each plant room for air movement, which keeps disease down, and room to reach its full size without crowding its neighbours.
What soil pH do roses need?
Roses prefer a soil pH of 6.0–6.5. Test your soil before amending it — most garden soils are close enough, and guessing with lime or sulphur can do more harm than good.
How often should I feed roses?
Feed in spring as growth starts and again in early summer with a balanced fertiliser at the label rate. Stop feeding by late summer so the plant hardens off for winter rather than pushing soft growth.
When is the best time to plant roses?
Bare-root roses are planted in late autumn or early spring while dormant, and container roses can be planted any time the ground is workable. The data puts maturity at 365–730 days, and a new rose usually flowers in its first year and settles into full flowering from its second.