Hello everyone;
I am posting this question for my mother in law who does not have access to a computer. I know virtually nothing about roses so I am turning to you for help.
She received a beautiful yellow rose bush about 1 1/2 months ago. It is producing quite a few roses but she said that some of them get brown on the very tip before the rose bud opens. She also said that the roses don't last long at all and if they get bumped or touched the petals will fall off right away. She is growing this rose in Texas, slightly north of San Antonio and has the it growing in a pot slightly bigger than what it came in.....she did say she has to water it daily or it gets crispy edges on the leaves, but it never sits in water as the pot has drain holes on the bottom. She has checked the entire plant for pests and found none that she could see. She did say that she is feeding it Color Burst Flowering Plant Food 15-30-15 (it is a granular texture).
Thats pretty much all the info I know, any help will be greatly appreciated.
Thanks and happy growing;
Victoria
Hi, Victoria. Sorry about the problem with the rosebush. (I'm partial to yellow roses myself. 
)
Your MIL's rosebush may be suffering from attack by thrips, very small insects. My basic gardening reference(s) are published by Sunset (Lane) Publishing. Here are some sentences...from Sunset's Western Garden Problem Solver:
"The surface of damaged leaves often looks silvery or bronzy, with a pattern of dots or spots where the chlorophyll is missing. Leaves may also be stippled, streaked, spotted, or stunted. Flowers and leaf buds may fail to open normally, appearing twisted, stuck together, or discolored. Although the insects may be hiding in a flower bud or leaf axil or under a leaf, the tell-tale black specks of excrement indicate that they are around. Infestations are likely to crest during hot, dry weather."
Some of Sunset's suggestions for management of thrips:
"....Encourage or introduce into your garden beneficial insects, such as parasitoid wasps, soldier beetles, and especially the green lacewing, whose larvae will hunt and kill [thrips] nymphs. Thrips nymphs can also be killed by dusting the undersides of infested foliage with sulfur or diatomaceous earth."
There's almost a full page of advice on thrips; maybe your local library has a reference or circulating copy you can borrow. Often, local garden supply stores/nurseries have copies, too, depending on where in Texas you are. Although Sunset published a National Gardening book in 1997, most of their books relate to "Western" gardening, but portions of Texas are included.
Good luck!
Cynthia H.
USDA Zone 9, Sunset Zone 17
)Your MIL's rosebush may be suffering from attack by thrips, very small insects. My basic gardening reference(s) are published by Sunset (Lane) Publishing. Here are some sentences...from Sunset's Western Garden Problem Solver:
"The surface of damaged leaves often looks silvery or bronzy, with a pattern of dots or spots where the chlorophyll is missing. Leaves may also be stippled, streaked, spotted, or stunted. Flowers and leaf buds may fail to open normally, appearing twisted, stuck together, or discolored. Although the insects may be hiding in a flower bud or leaf axil or under a leaf, the tell-tale black specks of excrement indicate that they are around. Infestations are likely to crest during hot, dry weather."
Some of Sunset's suggestions for management of thrips:
"....Encourage or introduce into your garden beneficial insects, such as parasitoid wasps, soldier beetles, and especially the green lacewing, whose larvae will hunt and kill [thrips] nymphs. Thrips nymphs can also be killed by dusting the undersides of infested foliage with sulfur or diatomaceous earth."
There's almost a full page of advice on thrips; maybe your local library has a reference or circulating copy you can borrow. Often, local garden supply stores/nurseries have copies, too, depending on where in Texas you are. Although Sunset published a National Gardening book in 1997, most of their books relate to "Western" gardening, but portions of Texas are included.
Good luck!
Cynthia H.
USDA Zone 9, Sunset Zone 17