Weekly brushing and seasonal daily care are vital. Collies reach full height by 18 months, filling out until 3 years… 

Weekly brushing is enough for their double coat. Growth stops by 24 months, but they maintain a sturdy, medium build… 

Brush twice weekly to manage shedding. Growth stops by 12 months, though they fill out until age two.

Weekly brushing manages high shedding. Growth stops at 12 months, but their double coat fills out until age two.

Brush 2-3 times weekly and daily during shed. Full height at 15 months, filling out until age two.

Weekly brushing is vital for their double coat. Growth stops at 12 months, with full maturity by age two.

Daily brushing manages heavy shedding. Height stops at 12 months, but they fill out until age two.

Heavy shedders needing frequent brushing. Height peak at 18 months; muscle growth continues until age 3.