Answer: Based on your description I am not certain what happened to your roses. Roses need a location with full sun all day, or for at least six hours a day including the hour of noon. In too much shade, they will not bloom and will usually dwindle away. Roses need good air circulation to help prevent disease problems. They need a spot that is well drained, meaning not a low spot where water collects during rainy spells. In a wet location they may suffer root damage and die as a result.
As far as plant selection, be sure you are planting roses that are considered winter hardy in your zone. Many grafted tea roses have limited winter hardiness, so you may want to consider some of the newer landscape roses such as the Knock Out or Carefree series. These have better winter hardiness and better disease resistance than many of the hybrid teas.
In terms of general care during the growing season, keep the soil evenly moist but not sopping wet. Mulch with an organic mulch year round, apply it in a flat layer over the root area and do not allow it to touch the stem. Top dress with compost each spring and use a general purpose granular or slow release granular fertilizer per the label directions. I hope this helps you trouble shoot.
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