Hybrid tea roses and floribundas are both hardy rose varieties; in fact, the first floribunda roses were derived from hybrid tea and polyantha roses. Despite their relation, however, there are several key differences between floribundas and hybrid teas.
Hybrid tea rose bushes grow significantly taller than do floribunda rose bushes. While hybrid tea rose bushes can reach up to 5 feet, floribunda rose bushes typically only reach from 1 1/2 to 2 1/2 feet.
Hybrid tea roses produce a single rose per stem. Floribunda roses usually produce one rose per stem, but they also have the capacity to grow two roses per stem.
Hybrid tea roses are known for their large bloom size. While floribunda rose bushes produce more flowers, the blooms are typically smaller.
More susceptible to disease and pests, hybrid tea roses often fall victim to black rot and aphids, and need to be treated with chemicals. Floribunda roses are more resistant to disease and insects, and rarely need to be treated.