Pruning Sixty-Year-Old Citrus Trees
When a friend who owns a house in San Jose asked for help in pruning her citrus trees (a lime, satsuma mandarin, and a grapefruit) during the first weekend in December, we agreed. The house had a lovely stone courtyard with two large citrus trees that had remained prolific producers in spite of being neglected for the last 20 years. The trees had been planted, she told us, approximately 60 years ago by an aunt.
Standard size citrus trees can reach 20 to 30 feet and spread almost as wide. Dwarf citrus, however, only reaches four to ten feet. The latter can be grown as landscape specimens or in pots where they can be easily moved around to protect them from frost and wind. In really hot, dry conditions, citrus in pots may need daily watering.
Once in San Jose, we checked the trees for diseases and pests. Aside from some of the lime leaves that had turned yellow, suggestive of too either much water or iron chlorosis (simply corrected with a little iron sulfate or chelated iron), the trees otherwise looked pest-free and loaded with ripe fruit.
Wearing gloves and long sleeves to protect against thorns, we shook the trees vigorously to remove unpicked fruit of previous seasons and the current season’s ripe fruit. The shaking yielded a five-gallon bucket and two partially full contractor bags of delectable limes and satsuma mandarins. The owner was delighted to have so much fruit. She even offered us some to make into marmalade, but we explained we had plenty of our own citrus on the farmette.
We carefully pruned out all the old dead branches and began shaping the trees, lifting and cutting branches that pointed down, removing crossed-over limbs, and cutting away branches that compromised the courtyard fence. Our work reduced the height and width of the trees (making it easier to harvest any fruit still hanging).
The work went smoothly. We even had time to tackle the ragged-looking grapefruit tree in the back. By the end of the day, we had freed three beautiful trees from a tangle of dead limbs and picked many pounds of fruit. The trees were once again serving the purpose for which they were planted–heavy producers that enhanced the beauty of the landscape.
Tags: chelated iron, chlorosis, citrus, dwarf, grapefuit, mandarin, orange, seedless