The world's fastest-growing plant in water is Duckweed (genus Wolffia), an aquatic plant that can double its biomass in just 16 to 24 hours. For fast-growing submerged or decorative water plants, Water Hyacinth, Guppy Grass, and indoor favorites like Pothos are top choices.
😳👇A small water plant called "duckweed" doubles its size every 36 hours! Not only is it the fastest growing plant on earth, but it also produces the most oxygen by absorbing CO₂.
Several fast-growing plants can sprout, mature, and be ready to harvest or display in just 30 days. Whether you are looking for edible crops, quick-blooming flowers, or houseplants, these selections will give you a nearly instant reward.
There is a vegetable known as Radish which is quite common in the UK; this vegetable will grow in just 3 days. Proven!
Plants like anthurium, spider plants, pothos, begonias, lucky bamboo, coleus, philodendron, English ivy, pancake plant, and paperwhites are among the easiest to grow in water.
Greens, including collards, kale, mustard and turnip, all qualify for the rapid harvest category. While they are fairly flexible for growing temperatures, best flavor comes with cool weather. They can be harvested as baby greens to use in salads, or many varieties will produce full sized leaves in under 60 days.
31 Houseplants That Can Grow in Water
The name “century plant” comes from the fact that the slow-growing plant takes years — although not 100 — to flower. The century plant, Agave Americana, is monocarpic, meaning it will bloom once in its lifetime. That bloom may not appear for 10, 20 or more years.
Several popular houseplants, vines, and fast-sprouting vegetables can show significant growth or sprout within just a single week.
Amorphophallus Titanum, the largest flower in the world. It blooms once every 40 years only for 4 days! Also called the Corpse Flower because of the smell. One of the specimens in the Mt Lofty Botanic Gardens flowered two years in a row...
Arugula is a fast-growing leafy green that can be ready to harvest in just 20-25 days. It thrives in cooler temperatures and prefers partial shade. Sow the arugula seeds directly in pots or garden beds, and keep the soil evenly moist. Harvest the leaves when they are young and tender for the best flavour.
October is the perfect time to plant trees, shrubs, conifers, and hardy perennials—or spring bulbs like tulips and daffodils—and if you're looking to sow cover crops or install lawns, now is the time for that as well.
True 365-day bloomers are rare, but several plants can provide nearly 12 months of flowers under ideal conditions. The best options depend on whether you are growing them indoors or outdoors:
The Chinese bamboo tree takes five years to grow. And when they go through a process of growing it, they have to water and fertilize the ground where it is every day. And it doesn't break through the ground until the fifth year. But once it breaks through the ground, within five weeks it grows 90 feet tall.
Giant Kelp grows faster than bamboo, which is the fastest growing plant on land. It can grow up to 1-2 feet/day and can reach 175 feet in height. Have you had your kelp today?
Spring Mix Lettuce: The Confidence Builder
You plant the seeds directly in the soil, and within five to six days, you'll see a carpet of green emerging. Spring mix grows just a few days slower than arugula, with harvests typically ready in about 21 to 27 days. Like arugula, spring mix is also cut-and-come-again.
Fastest growing plants for your garden:
Plants that reach harvestable maturity or exhibit visible, significant growth in 10 days include Microgreens (such as broccoli, radishes, or kale) and certain fast-sprouting herbs like basil. Additionally, propagating indoor plants like Pothos in water often produces visible roots in less than a week.
Camellias are evergreen shrubs that can live for up to 100 years, offering year-round interest with their glossy leaves and stunning blooms. These flowers typically bloom in late winter to spring, providing a burst of color when many other plants are still dormant.
The Century Plant (Agave americana) is commonly cited for blooming after a very long, sporadic period, often cited between 10 to 50+ years, rather than exactly 50. Known for its "death bloom," the plant sends up a massive stalk (up to 40 feet) and dies afterward, often producing "pups" (offshoots) to start a new cycle.
The Wollemi pine is one of the world's oldest and rarest trees. Only 46 adult trees and 43 juveniles remain in the wild. Belonging to a 200 million year-old plant family, this critically endangered Australian species is considered a global treasure.
Real aquatic plants are essential for a healthy, thriving ecosystem in freshwater aquariums and ponds. They serve as natural filters, oxygenate the water, and provide vital shelter for fish.
Indoor plants that tolerate or benefit from milk—like Snake Plants, Jade Plants, Angel Wing Begonias, and Money Plants—must be given a heavily diluted mix (usually 1:1 or 1:4 with water). Milk provides calcium and trace nutrients, but undiluted milk can sour, rot roots, and attract pests.
To start a baby spider plant (spiderette), snip the baby off the stem when it is at least 1-2 inches wide and has small root bumps. Place it in a shallow glass of water until roots are 1-2 inches long, then plant it in a pot with well-draining potting soil.