This is a pot for hydroponic cultivation. Unlike soil, hydroponics makes it difficult for insects to breed, making it suitable for kitchens. Insert the stem into the sponge and place the roots in the pot. If the roots grow and become tangled in the pot, you can trim the tips of the roots. You can also enjoy it by cutting the sponge slightly (adjusting it) and placing bulbs such as hyacinths and tulips in it. Most houseplants are suitable for bright locations behind lace curtains, avoiding direct sunlight. Dark places are not ideal, but if you must place them in a dark location, placing them near a window once a week will promote photosynthesis. If you don't use the brown-capped sponge, it can also be used as a vase. Height: approx. 13 cm Width: approx. 8 cm Due to its size, it will not fit in a mailbox, so the price reflects the cost of shipping in a box. Thank you for your understanding. Thank you for looking.