All bellow mentioned techniques are for those who are strugling with their roses after potting in soil or cinder.
Newly potted roses produce fresh White fibrous roots and as they are not seeding they might familier with chemical fertilizers. If you have well drained or cinder then your roses will produce roots more faster than any other roses. In small roses we need 3 things
1. Fresh roots with fastest production ability
2. Supportive Nitrojen for healthy Leaves
3. Healthy stems and proper photosynthesis
1. We need more roots for small roses to grow faster and to fight against various natural calamities. So we need to apply a bit higher phosphate for them.
2. A descent and healthy leaves is required to make energy and a good amount of photosynthesis so we need to apply Nitrojen and Magnesium for these.
3. To boost photo synthesis, co2 uptake and reduction of respiration during day time to save them from loosing energy we also need to apply potash as required.
So, now we have a descent idea what our plant require and why. We have a very well known fertilizer called 13 40 13 for early stage of roses. A bit higher phosphate for faster root growth and balanced N and K for supportive role as mentioned above. Also we need a strong macronutrient called Magnesium which is available in a form of Magnesium sulphate and Magnesium nitrate. We don’t need more nitrojen now so we will choose magnesium sulphate.
Apply 1gm 13 40 13 per plant or per litre for your roses every alternative day and apply magnesium sulphate 1gm/ltr or 1gm/plant alternatively. spray micronutrients at evening in every alternative week. This fertilizer can be applied for three months and then you can feed them with 20 20 20/ 191919.
Do not over water, use some compost with cinder for moisture holding capabilities. Spray with insecticides and fungicides in every week. Shower them with water regularly at daytime.