jiffy pot

...Large pieces of potting soil or pumice are placed in the bottom of the pot, and the soil is mixed with akadama soil, perlite, vermiculite, etc., with the fine particles sifted out. The jiffy pot, developed in Denmark, is a seedling pot made from a mixture of peat and pulp that is pressed. The seedlings that break through the wall of the pot are then repotted one after another in larger pots. Plastic pots can be colored freely and have properties similar to ceramics. Although they are not suitable for raising seedlings, they are often used as finishing pots and as decorative pots for indoor use. ...

*Some of the terminology that mentions "jiffy pot" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…鉢底に粗大な鉢片や軽石の類を置き，みじんをふるい捨てた赤玉土やパーライト，バーミキュライトなどを混合して使用する。　デンマークで開発されたジフィーポットjiffy potは泥炭とパルプを混ぜて圧搾した育苗鉢で，鉢壁をつき抜けて出た苗を次々と大きく鉢替えしてゆく。プラスチック鉢は着色が自由で陶磁器と同様の性質をもち，育苗には不向きであるが，仕上げおよび室内などの装飾鉢としての利用が多い。…

※「jiffy pot」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報