That depend upon the species. Some, such as the opuntias (prickly pear, cholla) can go from seed to a sizable plant in just a few short years. Others, such as the saguaro and barrel cacti, can take many decades to grow to a respectable size.
10 years
Sunflowers typically take about 80 to 120 days to mature from the time they are planted.
Armadillos are sexually mature at one year of age.
3-4 mins
Rabbits typically take about 6 months to mature and reach adulthood.
about 4 month from vegetation
It normally takes boys longer to mature then girls. Boy
Sunflower seeds will take about 30 to 45 days to mature after being cut.
1 year
60 days
25years
about 4 month from vegetation