How much waterings do seedlings need when planted in the ground?

[GMann]

Is it true that the smaller the palm, the less additional waterings it needs to get established?
 

Therefore would it be true that tiny seedlings barely need any additional waterings to survive? 

[happypalms]

I would say a tiny seedling planted in the ground would require good waterings. Obviously soil quality and temperature along with light and what variety the palm is. If I plant a tube stock palm (75mm container) I would certainly need to keep an eye on it. Also a small seedling struggles in comparison to a 140mm container palm in the ground. In containers it varies by your soil and temperatures in winter and watering in a cool climate is tricky. In summer with good drainage you can water a lot in a week again temperature plays a big part. It’s a balance with soil and weather condition’s along with air movement, watering is one element that plays a big role in growing good healthy seedlings, overwatering causes big problems. Indoor growing or hothouse growing is another story. 

[Harry’s Palms]

I find that palm seedlings need a damp soil to start life just as much as when they are older. As @happypalms says , SOIL QUALITY is imperative . My garden is well amended and mulched so drainage is good( I have volunteers pop up from my mature palms ) . It depends on your area how much watering you do . I am in my garden daily this time of the year , Southern California is a coastal desert . We don’t get rain during the summer - fall and very little in spring . Your area may be different . I would check to make sure your seedlings to make sure the ground is damp most of the time, they don’t have anyway to hold water when they are young and can dry out quickly . Harry