As a gardening and landscaping expert, I can confidently say that New Guinea impatiens are not considered a perennial plant in most parts of the United States. These plants are typically grown as annuals, which means they last for one full growing season.
In zones 10 through 12, where the climate is warmer and more favorable for tropical plants, New Guinea impatiens can sometimes be treated as perennials. With proper care and maintenance, they have the potential to come back every year in these specific zones.
However, it’s important to note that even in these warmer zones, New Guinea impatiens may still require some additional attention to ensure their longevity. One key factor to consider is cutting back the plants properly. By trimming them back in the fall or early winter, you can encourage new growth and help the impatiens survive through the colder months.
When cutting back New Guinea impatiens, it’s best to remove any dead or damaged foliage, as well as any long or leggy stems. This will help the plant maintain a more compact and healthy shape, and it will also stimulate new growth in the following season.
In addition to pruning, providing adequate care throughout the year is crucial for the perennial potential of New Guinea impatiens. This includes regular watering, fertilizing, and ensuring they are planted in well-draining soil. These plants thrive in partial shade to full sun, so finding the right balance of light exposure is essential for their overall health and longevity.
While New Guinea impatiens may have the potential to come back year after year in warmer zones, it’s worth noting that they are still more commonly grown as annuals in most parts of the country. This is because their tolerance for colder temperatures is limited, and they may struggle to survive harsh winters.
In my personal experience, I have found that treating New Guinea impatiens as annuals and replanting them each year can often yield better results. This allows for fresh, healthy plants that are not burdened by any potential winter damage or stress. However, for those living in zones 10 through 12, experimenting with treating New Guinea impatiens as perennials could be a rewarding endeavor.
New Guinea impatiens are typically grown as annuals in most U.S. zones. However, in warmer zones 10 through 12, they have the potential to come back every year when properly cut back and cared for. Whether you choose to treat them as annuals or perennials, providing good care and attention will ensure their overall health and longevity.
