Large Flowered Climbing Rose

Water deeply 1-2 times per week, allowing the top 2 inches of soil to dry out between waterings to prevent root rot; avoid wetting foliage to reduce fungal disease risk. Increase watering frequency during extended hot, dry periods, and reduce watering in late fall to prepare the plant for winter dormancy.

Plant in full sun, receiving a minimum of 6 hours of direct, unfiltered sunlight daily to promote abundant flowering and strong, disease-resistant growth. Partial shade may be tolerated in very hot climates, but will reduce bloom production and increase susceptibility to fungal issues.

Grow in fertile, well-drained loamy soil with a slightly acidic pH between 6.0 and 6.5 for optimal nutrient uptake. Amend heavy clay soils with compost and coarse sand to improve drainage, and amend sandy soils with well-rotted manure to increase water and nutrient retention.

Apply a balanced, slow-release rose fertilizer in early spring just as new growth emerges, followed by a second application after the first flush of blooms to support repeat flowering. Avoid fertilizing after late summer, as this can stimulate tender new growth that will be damaged by winter frost.

Thrive in temperatures between 60-75°F (15-24°C), with most varieties hardy to USDA zones 5-9; some cold-hardy cultivars can tolerate zone 4 conditions with winter protection. Provide afternoon shade in regions with consistent summer temperatures above 90°F (32°C) to prevent flower scorch and reduce water stress.

Prune in late winter or early spring before new growth begins, removing dead, damaged, or diseased canes first, then thinning overcrowded growth to improve air circulation. Tie new, flexible canes to their support horizontally to encourage more flower buds to form along the length of the cane, rather than just at the tip; remove spent blooms regularly to promote repeat flowering.

Most commonly propagated via semi-hardwood cuttings taken in mid to late summer, using 6-8 inch stem sections with at least 3 leaf nodes, dipped in rooting hormone and placed in moist, well-drained potting mix under high humidity. Grafting onto hardy rootstock is used commercially to produce plants with improved disease resistance and vigor, though home gardeners typically have success with stem cuttings for most cultivars.

Prefer moderate humidity levels between 40-60%; high humidity combined with poor air circulation increases the risk of common fungal diseases like black spot and powdery mildew. Avoid overhead watering and space plants appropriately to allow air flow around foliage, even in more humid growing regions.

Container-grown specimens should be repotted every 2-3 years in late winter, moving to a pot 2 inches larger in diameter with fresh, nutrient-rich rose potting mix. Prune back up to one-third of the root ball during repotting to encourage new root growth, and ensure the pot has ample drainage holes to prevent waterlogging.