I have rose plants in my home garden and they are quite old like 3 years. This plant was doing so good but suddenly it's leaves are started getting yellow and fell down. Even the new tiny leaves are suddenly got yellow and fell. Even the flower are not as good as earlier. Any suggestions how to prevent this
Mansi, I didn't know these were in pots on a balcony. That helps. Your comment about doing fertilizing JUST before this happened? is telling. Something changed and usually it is about fertilizer. Sounds about the same time, yes?
What exactly did you use? How much? Be brutally honest here. What was the formulation of NPK? Take a picture of the bag front and back or give me the name to look up. I guess I don't have to worry about you having winters, now do I?! ha ha ha! What kind of drainage have you got going in this pot. Monsoon time is wet wet wet and your rose needs perfect drainage to handle that much water. Is there a way to get your rose out of the rain and under a roof out of doors, not indoors?
I am seeing 'healthy' new leaf buds, I think. Many of them. The leaves are yellowing from the tip and margins inwards...totally salt burn or rather fertilizer burn. The monsoons could have flushed the soil of fertilizer so thoroughly...I think the monsoon saved your rose...and thus you see major life coming back. This is one hypothesis.
The other is too much water.
Please send a few more pictures. A close up of this picture and one of the entire pot, plant and environment. And maybe one of the bag of fertilizer.
What kind of soil did you use? I know after answering questions from all over the world on Stack Exchange, potting soil seems to be an American thing, hard to find in India, Africa, China...even Holland. Nurseries seem to sell potting soil made from Garden soil with no potting medium or sterilization. Garden soil is a big no no for any potted plant.
Garden soil, for lots of reasons doesn't belong in pots or planters. Garden soil compacts and doesn't drain well at all not to mention insects and disease with none of the moderators in the garden proper. Roots have to have air. Leaves need CO2. Pore spaces in the soil need to empty of water right away and let the air back in. Too wet too long the roots starve of O2 and start rotting anaerobically. Also very stinky.
Did you use gravel or rock beneath the soil and above the drain hole? This would exacerbate the drainage badly. This causes a 'perched water table' where the soil has to become saturated BEFORE the water moves very slowly into the gravel to drain. Water saturated soil will suffocate the roots.
One of two problems I can guess at this point; too much water with poor drainage (perched water table or garden soil) and/or fertilizer burn. In both cases, that soil has to be replaced. You might have to make your own soil and we can help with that. Very time consuming, you still need to find proper potting soil medium amendments and boy howdy does cooking soil STINK. As you repot/transplant check out the condition of the roots. Look for brown or mushy roots and notice the smell. Remove as much of the damaged roots as possible if they are there. Gently remove the old stinky soil as much as possible before transplanting. Please let me know what you used for soil and if you have ever seen 'potting' soil for sale? Is there a place in your yard in your garden for this rose?
There might be other ways to have your roses and smell them not the cooking soil...too.
I am working with a friend in India, Delhi, to make potting soil for India and beyond! You have so little land to have a private garden you HAVE to use pots! Again, it is a big no no to use garden soil from the garden proper in pots or planters or planter-like raised beds.
Stay in touch!