Bamboo is the fastest growing plant by recorded height growth. Certain bamboo species can grow up to 91 cm (35 inches) in a day, although growth depends on the species and growing conditions.
TL;DR
- Certain bamboo species hold the record for the fastest plant growth, reaching up to 91 cm per day.
- Fast growth depends on species, temperature, water, light, and other growing conditions.
- Bamboo is a grass, not a tree, even though some species become very tall.
- Moluccan albizia is a leading example when bamboo is excluded and only trees are compared.
- Radishes are a better choice if you want a plant that grows quickly to a useful harvest.
What is the fastest growing plant?
The fastest growing plant is certain bamboo species, which have been recorded growing up to 91 cm (35 inches) in one day. Guinness World Records lists bamboo as the fastest growing plant, based on documented growth rates from certain species.
Bamboo belongs to the grass family. Its rapid height growth comes from new shoots that extend quickly from established underground structures called rhizomes. A rhizome is a modified underground stem that produces new shoots and roots.
The record does not mean every bamboo plant grows nearly a metre each day. Species, age, weather, water, soil, and other conditions all affect growth. The very high rate applies to particular bamboo species under favorable conditions.
That distinction matters if you are choosing a fast-growing plant for your garden. A plant can have an impressive maximum growth rate without being the best choice for a small yard or container.
How fast can bamboo grow?
Some bamboo can grow more than 1 metre in a day under suitable conditions, according to the University of Georgia Cooperative Extension. Its guidance also notes that bamboo growth varies greatly between types.
The fastest growth usually happens when a new bamboo shoot is extending upward. Once the shoot reaches its mature height, it does not keep growing taller in the same way. The plant then puts more energy into developing branches and leaves.
Bamboo also differs in how it spreads. Clumping bamboo grows from rhizomes that stay closer to the parent plant. Running bamboo can spread farther through underground rhizomes and may become difficult to contain.
For a home garden, that spreading habit deserves as much attention as the growth rate. A fast-growing plant can fill a space quickly, but it can also outgrow a planting area.
Which plants grow quickly besides bamboo?
Several other plants grow quickly, but they are measured in different ways. A tree, vegetable, marine plant, and bamboo cannot always be compared fairly because their growth is recorded over different time periods and under different conditions.
Moluccan albizia
Moluccan albizia, also called Falcataria moluccana, is one of the fastest-growing trees when bamboo is excluded. Guinness World Records reports a documented tree that reached 10.74 metres after 13 months in Sabah, Malaysia.
Bamboo is excluded from tree records because bamboo is classified as a woody grass. This makes the comparison useful when someone specifically wants to know about fast-growing trees.
Moluccan albizia is not a sensible choice simply because it grows quickly. Tree size, climate, available space, and local planting conditions all matter when choosing a tree.
Giant kelp
Giant kelp, Macrocystis pyrifera, is the fastest-growing marine plant listed by Guinness World Records. Its fronds can grow up to about 0.5 metre per day as they approach the water’s surface.
This is a useful reminder that “fastest growing plant” can mean different things depending on the environment. Giant kelp grows in marine habitats, so it is not an option for a home garden.
Radish
Radish is a better example of a fast-growing plant for gardeners who want a quick result. The University of Maryland Extension lists 25 to 35 days to maturity for radishes, although the exact time depends on the variety and growing conditions.
That makes radish quite different from bamboo. Bamboo wins for exceptional height growth, while radish is useful when the goal is a quick edible crop.
Why does bamboo grow so fast?
Bamboo grows rapidly because new shoots can extend from existing underground rhizomes during the growing season. The shoot already has much of the plant structure it needs, so it can devote energy to rapid upward extension.
Think of a bamboo shoot like a telescoping pole. Instead of building each section slowly from the base upward, the shoot extends its existing sections as it rises.
Warm conditions, adequate water, suitable soil, and enough light can support strong growth. Poor conditions can slow the plant considerably.
The exact growth rate also depends on the bamboo species. A claim that all bamboo grows at the same speed would be misleading.
Is the fastest growing plant the best plant for a garden?
No. The fastest growing plant is not automatically the best plant for a particular garden.
Bamboo can be useful when you want tall screening or a strong vertical presence, but its growth and spreading habits need to match the available space. The University of Georgia Cooperative Extension notes that running bamboo can spread through underground rhizomes and recommends root barriers where unwanted spread is a concern.
For a small garden, container, or quick vegetable bed, a slower but more manageable plant may be a better choice.
Choose based on the result you want. If you want rapid height, bamboo is the clear answer. If you want food within a few weeks, radish makes more sense. If you want a fast-growing tree, look at species suited to your climate and available space rather than choosing only by growth rate.
Common mistakes when choosing a fast-growing plant
- Choosing bamboo only because it grows quickly can lead to a plant that outgrows the space or spreads farther than expected.
- Treating a record growth rate as a normal daily rate can give you unrealistic expectations because maximum growth occurs under particular conditions.
- Comparing bamboo with vegetables by height alone ignores the different goals of the plants.
- Picking a fast-growing tree without checking its mature size can create space and maintenance problems later.
- Assuming all bamboo species grow at the same rate overlooks major differences between species and growing conditions.
Frequently asked questions about the fastest growing plant
What is the fastest growing plant?
Certain bamboo species have the fastest recorded plant growth, reaching up to 91 cm per day under suitable conditions.
How fast can bamboo grow in one day?
Some bamboo has been recorded growing up to 91 cm in a day, while the University of Georgia Cooperative Extension reports that some species can exceed 1 metre per day under favorable conditions.
Is bamboo a tree or a grass?
Bamboo is a grass. Some species become very tall and woody, but botanically they belong to the grass family.
What is the fastest growing tree?
Moluccan albizia, Falcataria moluccana, is a leading example of a very fast-growing tree, with a documented individual reaching 10.74 metres after 13 months.
What is a fast-growing plant for a home garden?
Radish is a practical fast-growing choice for a home garden because some varieties can reach harvest maturity in about 25 to 35 days under suitable conditions.
Does every bamboo plant grow extremely fast?
No. Growth varies by species and growing conditions, so the record rate should not be treated as the normal rate for every bamboo plant.