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I think I know what you mean. Yes, when actively growing there will be a higher water content to the sap, which with therefore be more dilute and less viscous. The sap of pines is like antifreeze and protects them from tissue damage in freezing temperatures so in winter, the lower water content further reduces the risk of cell damage by freezing.

However, the tree will bleed more in its growing season more because sap is more actively moving than because it's less viscous.

12-Mar-2008	#5
Glider bonsaiTALK Master Join Date: Apr-2004 Location: London Country: UK USDA Zone: UK = 9a-b AHS Heat Zone: ? Posts: 347	I think I know what you mean. Yes, when actively growing there will be a higher water content to the sap, which with therefore be more dilute and less viscous. The sap of pines is like antifreeze and protects them from tissue damage in freezing temperatures so in winter, the lower water content further reduces the risk of cell damage by freezing. However, the tree will bleed more in its growing season more because sap is more actively moving than because it's less viscous. __________________ Experience is knowledge gained immediately after it was needed.