Rose bushes require nutrient-rich heavy loam soil. The soil should be moist but well-drained. Monitoring soil pH is also important, since roses can only tolerate moderately acidic soil.
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Most roses like a pH of about 6.5. Neutral soil is 7.0 and 6.5 is slightly acidic. Roses can survive with a pH as low as 5.0 but they will not be as healthy or vibrant-looking.
Overly acidic soil kills a rose bush. If your leaves are discolored or the flowers begin to wilt, you should check the pH.
Since roses do not like very acidic soil, you may need to decrease acid levels to promote rose health. You can raise soil pH levels using natural lime soil or crushed limestone.