Healthy growth can overburden tree limbs.

It was probably the extra chill this last winter that made some deciduous fruit trees bloom more profusely early in spring than they typically do. Unusually busy bees in some regions improved pollination and subsequent fruit set, although some was dislodged by late rain. The sudden warmth this last spring not only improved the flavor of fruit, but also made some grow larger than typical.

More and better fruit is usually what those who grow fruit strive for. The problem with some trees now is excess. After pruning our fruit trees every winter for a few years, we get to know how much to prune them to maximize productions without overloading the trees. When the trees produce more than expected, they may not be able to support the weight of their own fruit.

Many plum and peach trees have already dropped limbs that were overburdened with the weight of fruit. Nectarine, apricot, pluot (and aprium, plumcot and all those weird hybrids), and prune trees can potentially drop limbs as well. Even without breaking, heavy limbs can get disfigured simply by sagging downward. Broken or sagging limbs expose inner bark to sun scald.

Broken limbs obviously can not be salvaged, so can only be removed. They should be cut cleanly away without leaving stubs. Sagging limbs can be propped with notched stakes tucked under side branches that will keep them from sliding upward. The notches keep such stakes from sliding off to either side. Much of the excessive fruit can be removed from severely sagging limbs. However, if the fruit is so ripe that it will not be getting any heavier, there is no advantage to removal.

Formerly shaded bark that suddenly becomes exposed to direct sunlight should be shaded. If partly shaded though much of the day, it should be safe. If expected to be shaded next year by new growth, bark can be protected temporarily with duct tape or stapled cardboard, or even foliated bits of the limb that broke, tied over the bark. Light colored paint is unsightly, but can be applied to reflect sunlight from bark that is expected to remain exposed permanently.

Excessive weight is not only a problem for fruit trees. Some sweetgum, fruitless mulberry and old fashioned Chinese elm trees can produce so much healthy foliage that limbs hang lower than they should. Some shade trees can even drop limbs ‘very’ unexpectedly, when the weather is warm and humid, but without wind.

4 thoughts on “Too Much Of A Good Thing

  1. Great post! I thought you are supposed to leave stubs when removing limbs? I have to trim off small branches my trees every summer that hang down too low. I like the appearance of low hanging branches, and I an just move the ones from the maples out of the way as I mow. The two sycamores, however are a different story… Their lower branches are very stiff and would rather knock you off the mower. It is weird to me how come I have to trim lower branches every year even though the tree is getting taller. The sycamores aren’t producing new lower branches so why should they be an issue every year? Thanks for sharing! I hope you are well.

    Liked by 1 person

    1. Well, the limbs sag with weight. Sure, the upper limbs go upward, but the middle limbs branch in various directions, and the lower limbs reach downward, as well as sag.
      Stubs are a problem! They inhibit compartmentalization of the pruning wounds, and promote structurally deficient and crowded growth.

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    1. Crabapples are challenging to prune anyway. Some of the old cultivars can get tangled growth, no matter how carefully pruned. Then, it is impossible to predict fruit set. Fortunately, they tolerate aggressive pruning if necessary.

      Liked by 1 person

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