Primary growth

Primary growth - A type of growth whereby a plant grows in length. Examples include the growth of roots and shoots.
Procambium - A primary meristem of roots and shoots that forms the vascular tissue.
Prokaryote ...

primary growth Growth arising from cellular activities in apical meristems.
primary nutrient A nutrient required by plants in a relatively large amount (nitrogen, phosphorus, and potassium). See macronutrient.

This "secondary" growth often is weaker than the primary growth put out first, so expect to find small branchlet loss in high wind storms this summer. The secondary growth also may come out in a bushy or tuft-like pattern called "witches brooming.

layer of mulch around the herb plants reduces moisture loss from evaporation and moderates soil temperatures. Cutting back annual herbs after they flower, promotes future leaf growth. Prune perennial herbs in the season opposite their primary growth ...

See also: Water, Stage, Adventitious, Secondary growth, Leaf