Citrus Grafting & T-Budding Seasonal Calendar
Determine active sap flow, bark slipping windows, and heat injury thresholds for citrus budding in Zones 9–11.
Enter botanical and planning parameters
Biological Mechanism & Horticultural Rules
Citrus propagation is performed primarily via Inverted T-Budding or Chip Budding onto 1-year seedling rootstocks (Carrizo Citrange, Volkameriana, Sour Orange, Flying Dragon). Budding requires active cambial cell division so bark "slips" cleanly without tearing. Optimal callusing temperatures are 75°F–85°F.
Use registered, disease-tested budwood to materially reduce the risk of moving graft-transmissible citrus pathogens. Follow the rules of your state or country.
Frequently Asked Questions
Why is Inverted T-Budding preferred for citrus?
Inverted T cuts shed downward sap flow away from the bud shield, preventing sap accumulation that can cause bud eye rotting in wet climates.
What is Citrus Greening (HLB)?
Huanglongbing is a destructive citrus disease associated with phloem-limited bacteria and spread primarily by psyllids; infected propagation material can also move pathogens. Obtain budwood through a registered clean-stock program rather than an unverified yard tree.