I have just started growing two T. Fortunei in large sixty gallon pots, the palms are very small and not much more than a year old (bought from Art Knapp's in April). They have been in the pots for about eight weeks and I have been fertilizing with a 20-20-20 mix. They have just barely begun to show signs of new growth. Does anyone know how long it will be before they take off, and how big they will get by summer's end? Thanks.