Difference Between Annual And Perennial Plants – Gro Indoor
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Difference Between Annual And Perennial Plants

by Kunal Khatri 09 Apr 2023

Difference Between Annual And Perennial Plants

The texture, color, and bloom time of a plant are a few factors that highly affect a gardener’s choice while selecting plants for their garden. The decision on which plants to grow in your garden will be highly influenced by your preference and the season in which you are trying to set up your garden.

Some plants can survive almost any climate, which is why they can be grown at any time of the year. Others are suitable for a particular season. Hence, knowing the difference between annual and perennial plants can be very beneficial for you before setting up your garden.

Your preferences very much influence the decision of what plants to choose to grow in your garden. If you plan to grow plants that bloom and grow periodically, you must go for annual plants. Contrarily, Perennial plants should be your choice if you are looking to replanting your garden after every season. It is particularly why a gardener needs to know about the differences between annual and perennial plants.

No plant can be classified as the top choice of every gardener. Preferences do differ for every gardener, and the different growth conditions for every plant also influence a gardener’s decision. Gardeners do have an emotional attachment with plants, and why not? It is their source of income, and they spend most of their time growing and taking care of different plants. So, developing an emotional attachment with them is only natural for a gardener.

Gardeners claim that every plant is best in its way. There is no distinct winner. The selection of plants only depends upon the preference of a gardener. Here is all you need to know about the difference between perennial and annual plants.

Annual And Perennial Plant The Difference

Annual and perennial plants are differentiated on their growth characteristics. Annuals live for one year only while perennials come back every year. Most perennials’ lasting time is hard to tell; however, most of them come back to life for three to four years. Their distinct nature is that they come back more vibrant after every winter.

For a plant to be classified under the perennial category, it must live for at least two consecutive years. Flowers of many perennials would never bloom until they have their roots established well deep down under the ground. So, you might not see fully blossomed flowers on many perennials for a couple of growing seasons.

The Impact Of Hardiness Zones On Annual And Perennial Plants

Like hardy annual plants, the growth of many perennials also depends upon a hardiness zone. Hardy perennials are known to survive even the harshest climatic conditions. On the other hand, tender perennials can grow for multiple seasons but would wither in harsh wintry conditions. Tender perennials are mostly found in tropical regions where temperatures are moderate.

Even though tender perennials are supposed to live for more than two seasons, they would wither if exposed to severe winters. Experts stress knowing the nature of hardiness zones because it helps gardeners decide which plants to grow under specific conditions.

Do Annual Plants Die After A Year?

Annuals are not like perennials that come back after a year. Gardeners must replant (start from seed ) annual plants every year. There is a reason why annual plants are mostly found in cold growing zones. They wither at the year-end; hence, gardeners don’t have to worry about their plants getting damaged due to harsh winters. If you find it difficult to remember the difference between these two, just keep in mind that annuals need to be replaced every year.

Transformation Of Annual Plants To Perennial Can It Happen?

Can annuals become perennials? The answer is yes, but it depends on certain conditions. True annuals such as cosmos and sunflowers cannot be turned into perennials. But some annuals were processed into tender perennials after taking them through a process. If you bring them indoors during the winters, provide them with sufficient light. Then return them to their outdoor habitat once the weather is warm again. This way, they can regrow for many years.

Hardy annuals are often deceptive for people as they are perceived to have a longer life expectancy than many annuals and are thought to survive mildly tougher climatic conditions. However, the question of them turning into perennials again depends on your climatic conditions and hardiness zone.

How An Indoor Growing Space Accommodates Plant Growth In Colder Months?

You should learn more about indoor growing if you plan on keeping your plants alive during the toughest winters. Our complete grow tent kits include everything you need to grow your plants indoors, such as in places like your garage, closet, shed, or spare bedroom.

With a Grow tent, Grow light, and Ventilation system, you can also include items vital for indoor growing like ‘pots and soil’ or ‘hydroponics system,’ ‘harvest supplies,’ accessories/upgrades, and more. However, if you plan on keeping your tender perennials alive, you are better off with ‘T5 grow tent kit’ or ‘LED grow tent kit.’

Our latest article on The Best Grow Tent Kits Of The Year covers up everything that you need to know about lighting technologies.

Do Perennial Plants Spread?

Perennials are best to fill in your garden gaps as they can spread and regrow in the next season from their previous roots. Bugleweed, Balloon fowers, Creeping thyme, Clematis, and Black-eyed Susan are some perennials that can make you some big bucks. However, some perennials show heavy growth. You might want to contain their growth and spread and grow them in containers if you have limited growing space in your garden. Some of these plants are mint, anemone, daisies, and yarrow.

Which Perennials Grow Easily?

Gardeners often enjoy the regrowth of their perennials year after year with little or no effort. That is why perennials are expensive. Some of them are even easier to grow, depending on your growing zones. Here are the names of some of the best perennials:

• Coneflowers • Hostas • Lilies • Black-eyed Susans • Sedums • Peonies • Bleeding hearts Contrarily, varieties of snapdragons, zinnias, petunias, and sunflowers are easy-to-grow annual plants.

Which Perennials Take The Longest Time To Grow?

The time perennials take to grow depends on hardiness zones. Biennial plants live for two years; therefore, their growth time is different from other perennials. Biennial plants can be easily classified as they only produce foliage without flowers during their first growing season. Some biennials are deceptive and grow into new plants in spring by reseeding themselves. They show the first signs of flowers only during the second growing season.


Annual, perennial, biennial, hardy annual, and tender perennial are a few terms you might have heard a lot if you are a gardener. At Groindoor.com you can have answers to all of your queries regarding the differences between these types and how you can have a bountiful gardening season.

May 3rd 2021
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