How to Grow Tea Roses in Pots

What are the Ideal Pot Sizes and Soil Mix for Growing Tea Roses in Pots?

For growing tea roses in pots, the following guidelines are important:

Pot Size: Choose a pot with a minimum internal dimension of at least 45 x 45 cm (approximately 60 litres) to ensure adequate depth for the roots. A depth of at least 40 cm is recommended to accommodate the long roots of hybrid tea roses[2][4][5].
Soil Mix: Use a high-quality soilless mix amended with compost for extra nutritional benefits. A mix that includes:
A base of loam-based compost (such as John Innes No 3)
Added compost or well-rotted manure for nutrient retention
Perlite or similar materials to improve drainage[2][5].

Avoid using garden soil or topsoil in containers as they are too dense and heavy for potted plants[5].

Frequency and Amount: Water your tea roses when the top inch of soil feels dry to the touch. In hot weather or during the summer, daily watering may be necessary. Ensure the soil is saturated until water runs out of the drainage holes[5].
Method: Water the soil rather than the leaves to prevent disease. Deep watering encourages root growth, especially in hot climates and sandy soils[3][4].
Temperature and Humidity: In hot and humid climates, tea roses may require more frequent watering. In cooler and drier climates, watering can be less frequent. Ensure the soil does not become waterlogged, as this can lead to root problems[3][4].

Fertilizers:
Use a slow-release granular rose fertilizer with a balanced NPK ratio (e.g., 10-10-10) when planting.
Apply a liquid rose fertilizer every 4 to 6 weeks during the growing season to maintain nutrient levels[5].
Add a handful of bone meal or superphosphate to promote healthy root development[4][5].
Pruning:
Prune hybrid tea roses in February or March to encourage better growth and blooming.
For newly planted roses, cut back the bush to around 10-15 cm from the ground, leaving short sturdy stems. This is known as hard pruning.
Use gardening gloves and sharp secateurs to remove any crossing, dead, diseased, or damaged stems. Shape the rose to an open, goblet shape[2][4].

Common Pests and Diseases:
Pests: Aphids, whiteflies, and spider mites.
Diseases: Black spot, powdery mildew, and rust.
Symptoms: Black spots on leaves, white powdery patches, yellowing leaves, and fine webbing.
Treatment: Use insecticidal soap or neem oil for pests. For diseases, use fungicides and ensure good air circulation around the plants[2][3].
Preventive Measures:
Provide good air circulation around the plants.
Water the soil rather than the leaves to prevent fungal diseases.
Mulch around the base of the plants to keep the soil moist and cool, and to discourage weeds and black spots[3][4].

How to plant, grow and care for hybrid tea roses – Jacksons Nurseries
https://www.jacksonsnurseries.co.uk/hybrid-tea-roses-planting-guide.html
Hybrid Tea Rose Care Guide – Tree2mydoor
https://tree2mydoor.com/blogs/content/hybrid-tea-rose-care-guide
Growing Roses in Pots – Garden Design
https://www.gardendesign.com/roses/planting-in-pots.html