Catnip, also known as Nepeta cataria, is a popular herb that produces a euphoric response in cats. However, not all cats are attracted to catnip, and some may have an adverse reaction to it. Fortunately, there are several natural alternatives to catnip that can be grown at home. Here are some of the best options:

1. Silver vine: Silver vine is a climbing plant that is native to the mountainous regions of Japan and China. It contains two compounds, actinidine, and dihydroactinidiolide, which can produce a similar response to catnip in cats. You can purchase silver vine seeds online or at a garden center, and the plant is relatively easy to grow.
2. Valerian root: Valerian root is a perennial plant that is often used as a natural remedy for anxiety and sleep disorders in humans. It has a pungent odor that can be attractive to cats, and it can produce a similar effect to catnip. You can purchase valerian root seeds or plants online or at a garden center.
3. Honeysuckle: Honeysuckle is a woody vine that produces fragrant flowers in the summer. The plant contains a compound called nepetalactol, which is similar to the compound found in catnip. You can grow honeysuckle from seeds or cuttings, and it is relatively easy to maintain.
4. Lemongrass: Lemongrass is a herb that is often used in cooking and has a citrusy aroma. It contains a compound called citral, which can be attractive to cats. You can purchase lemongrass seeds or plants online or at a garden center, and it is relatively easy to grow.
5. Cat thyme: Cat thyme is a herb that is high in nepetalactone, the same compound found in catnip. It has a slightly different smell than catnip, but it can produce a similar effect in cats. You can purchase cat thyme seeds or plants online or at a garden center, and it is relatively easy to grow.

When growing these plants, it is important to ensure that they are in a safe location where your cat cannot accidentally ingest them. It is also important to note that some cats may not respond to these plants, and you should always monitor your cat’s behavior when introducing them to new plants.

In conclusion, there are several natural alternatives to catnip that can be grown at home. Silver vine, valerian root, honeysuckle, lemongrass, and cat thyme are all great options that can produce a similar effect to catnip in cats. Growing these plants is relatively easy, and they can provide your cat with a safe and enjoyable way to play and relax.