Are there certain days I cannot water plants?


Question Continued: 

Does watering on Thursday cause the plants to grow on Shabbos? I just planted a lot of vegetables. With a 2-day Yom Tov coming, I would want to water them Thursday because they might dehydrate and cause us a financial loss.



Not a problem.

שבת יח, א ת”ר פותקין מים לגינה ע”ש עם חשיכה ומתמלאת והולכת כל היום כולו.