Hye Deepika.!
I appreciate your interest in biodiversity based information.
According to my knowledge, There is a plant named RAFFLESIA ARNOLDII. This is a very beautiful flower of orange colour and is found in the rainforest of Indonesia. It is considered world's largest bloom which weighs around 15 pounds and also can grow upto 3Feet in diameter. This is a parasitic plant with invisible roots,stems, leaves etc.
Also, it produced a fruit that contains thousands of seeds inside it. It is a unsexual plant and is also considered as "critically endangered" By IUCN (THE INTERNATIONAL UNION FOR THE CONSERVATION OF NATURE).
After, This plant there is second largest plant in world which is named as TITAN ARUM and is also known as death flower. It is the TALLEST plant in the world which can grow upto 10 to 15 feet. It's height is so magic in itself that it is now registered in GUINNESS book of world records.
I really hope it satisfy your Curiousty . Thankyou

Hey,

Hope you are doing well

World's most gigantic plants include:

1. Rafflesia Arnoldii found in Indonesia can reach diameter of one meter.
2. Kauri Tree found in NewZealand
3. Splendid Pitcher plant is found in Malaysian Borneo

Thankyou

Hi,

Rafflesia arnoldii.It is the largest flower in the world. This rare flower is found in the rainforests of Indonesia. It can grow to be 3 feet across and weigh up to 15 pounds! It is a parasitic plant, with no visible leaves, roots, or stem.

I hope it helps you.

Happy learning!!