伸のび盛ざかり

noun, noun which may take the genitive case particle 'no'

growth period; period of rapid growth

Refers to a time when someone or something is growing quickly, often used for children, adolescents, or plants.

• うちの子こは今いま、伸のび盛ざかりで、服ふくがすぐ小ちいさくなる。

  Our child is in a growth spurt now, so clothes quickly become too small.

• この植しょく物ぶつは伸のび盛ざかりだから、水みずをたくさんあげてね。

  This plant is in a period of rapid growth, so give it plenty of water.