The Grass Doctor

Why are my roses growing bad after I put fertilizer?

I had recently planted 2 rose shrubs in pots. I had 3 beautiful roses. After about 2-3 weeks of planting, I applied 'Rose Thrive' (fertilizer) and now there is a 'white powder' like on the stems; the rose have turned a shade of green with pink spots, and leaves have yellow edges? Could you tell me what's gone wrong? thanks Thanks Donna I will try that.

Public Comments

1. you have some kind of fungi on your roses i don't know were you got it from but thats what you got see if you can wash the stems down with alittle bleach and water about a capful of bleach to half gallon of water see if that doesn't kill the white fungi on the stems.its always good to plant a banana peel with your roses so after you eat a banana take the peel and go plant it with your roses.hope my info was helpful hope you bring back your roses.
2. It sounds like your roses have dusty mildew. You can mix 1T baking soda 1T. liquid dish soap 1 gallon then spray them with it. This mixture is a remedy for black spot which is also a mold disease. I also wonder if you might not have over fertilized them it's easy to do when they're in pots.
3. If they were just planted and you fertilized them you may have 'burnt' them with the fertilizer. They are pretty tough so they will probably recover with time (don't fertilize for a while though). They could have 'black spot' (common rose disease), don't panic will recover. Don't water roses on the leaves, this encourages fungus diseases which they are prone to. Try to water with drip irrigation etc. A good health building tonic for them would be Seasol or any good sea weed extract. Available at nurseries you add it to water and water plants. It's marvellous and is a transplant shock prev enter and root promotor but doesn't burn. If you had alot of rain at the time of planting you could have these fungal problems. Just keep plant watered but only when needed and see what happens. Do not fertilize again.