Thanks, I have my seedlings in half drums in full sunlight. we water them lightly twice a day, and fertilise them with liquid fertiliser every 8 to 10 days. Our normal summer temperature is about 28' C and we are quite sheltered regarding wind. Because we are on a hill we experience no frost in our winter months.
This question is not easily nor quickly answered. Depending on the plant(s) in question, several variables (such as moisture, nutrition, light, temperature, media, humidity, air movement, container size and type, and variety) would need to be identified.