How do we deal with mistletoe in our HOA's common area trees?

By OurHOA · General information · Revised October 31, 2026

How an HOA board manages mistletoe in common area trees: oak mistletoe vs dwarf mistletoe on pines, pruning cuts and timing, when to remove a tree, and contract wording.

Part of the HOA board handbook: vendors, projects and upkeep.

The short answer

Cut it out early and keep cutting. Mistletoe grows from a root-like structure inside the branch, so pulling the green clump off only resets the clock. The fix that works is pruning the infected branch below the point of attachment, during the dormant season, by a certified arborist on a schedule the board sets for years, not one visit. Where a tree is heavily infected and the cuts would strip too much of the canopy, plan to remove and replace it. Which mistletoe you have changes the plan. The leafy mistletoe found on oaks, elms and hackberries in Texas and Florida is a slow drain that rarely kills a healthy tree. The dwarf mistletoe on Colorado pines and Douglas-fir weakens and kills pines and Douglas-fir over years. Rules on tree work, pesticide application and owner trees vary by state and by your governing documents. This guide is general education, not legal advice.

Figure out which mistletoe you have

Leafy mistletoe. In Florida, UF/IFAS Gardening Solutions identifies the common species as oak mistletoe (Phoradendron serotinum), which grows only on deciduous trees and shows up most on laurel oaks, along with elms, hackberries, sycamores and wild cherry. Texas A&M AgriLife says the Texas plant typically grows on deciduous trees such as oak and mesquite, and the Texas A&M Forest Service adds sugarberry and elm. Look for green, leathery clumps that stand out once the host drops its leaves, often with small white berries in winter. Don't confuse it with ball moss. The Forest Service notes that ball moss is an air plant that takes nothing from the tree. A crew that bills to remove ball moss as if it were mistletoe is selling work the tree does not need. Dwarf mistletoe. Colorado State University Extension fact sheet 2.925 lists five dwarf mistletoes in Colorado. The ones boards meet most are on ponderosa pine, lodgepole pine and Douglas-fir. The shoots are small, and on Douglas-fir only about half an inch long, so most people find the disease by its witches' brooms: dense, twiggy clusters of branches. Thinning, yellowing crowns and dying tops follow. CSU says deciduous trees such as aspen, ash, birch, cottonwood and Gambel oak are not attacked. Juniper mistletoe grows on junipers in western Colorado. CSU calls it less damaging, though heavy infestations can kill parts of a tree in a long drought.

Why it matters to the association

Leafy mistletoe takes water and nutrients from the tree. The Forest Service says it is unlikely to kill a tree directly, but infested branches may die. UF/IFAS warns it can weaken or kill trees already stressed by pests, storms or age, and AgriLife says it is especially hard on trees during drought. For a board, a dead limb over a sidewalk, a pool deck or a parking row is the real exposure. It also spreads. Birds carry the sticky seeds from tree to tree, so one heavily infected oak at the entrance seeds the rest of the common area and every owner's yard nearby. AgriLife says the plant takes two to three years to mature, which is the window to cut it before it sets seed. Dwarf mistletoe is a slower, surer problem. CSU says seeds are shot from the fruit at almost 60 miles per hour in August and early September. Spread between trees of similar height is about 1 to 2 feet a year, but seed falling from a tall infected tree onto young trees below can travel up to 60 feet. CSU's table for ponderosa pine estimates that half of heavily infected trees 4 to 9 inches in diameter die within about 7 years. Infected trees are also more likely to be hit by mountain pine beetle and Ips beetles.

Pruning and treatment that works

Leafy mistletoe on hardwoods. UF/IFAS says to cut the infested branch at least 6 inches below where the mistletoe attaches. AgriLife adds two limits the board should write into the job: prune no more than one third of a tree's canopy, and remember that the stress from over-pruning can do more damage than the mistletoe. When the infection is in the trunk or the main scaffold limbs, leave it and plan for the tree's eventual replacement instead of butchering the crown. Timing. AgriLife says light pruning can happen any time but major pruning is best in winter, when the tree is dormant and the clumps are easy to see. In Texas oak country, do not prune oaks from February through June, because fresh wounds can spread oak wilt, and paint every oak wound. Our guide on preventing and containing oak wilt in Texas HOA trees covers that rule in detail. Growth regulator. AgriLife notes that a plant growth regulator, ethephon, is registered in the U.S. to control mistletoe growth on deciduous trees, but it suppresses the shoots rather than killing the plant, and no herbicide kills mistletoe without harming the tree. UF/IFAS says to apply it only while the host is dormant, usually December to early February, and that in Florida only a licensed pest control operator may apply it. Treat it as a stopgap for a tree you cannot prune. Dwarf mistletoe on conifers. CSU's approach is different. Rate each tree by splitting the crown into thirds and scoring each third 0, 1 or 2 for how many branches are infected. On trees scoring 1 to 4, cut the lower and largest brooms off at the branch collar, keep at least 30 to 40 percent of the live crown counted from the top, and recheck every two to three years. Trunk infections can stay. Full eradication is not the goal.

When to remove a tree instead

Removal is the right call more often with dwarf mistletoe than with leafy mistletoe. CSU recommends removing trees rated 5 or 6, trees with only a few live branches left, and tall trees with infections too high to prune, because they keep raining seed on everything below them. Where space allows, CSU suggests an 18 meter (about 60 foot) buffer of cut or resistant trees between infected and healthy pines. Replant with species the local mistletoe cannot use. CSU's replacement list for infected ponderosa pine includes blue spruce, bristlecone, pinyon and limber pine, Douglas-fir and Rocky Mountain juniper. For lodgepole it lists subalpine fir, Engelmann spruce, bristlecone, limber pine and Douglas-fir. Deciduous trees are safe from dwarf and juniper mistletoe everywhere. For an oak or elm with leafy mistletoe, removal makes sense when the infestation sits in the trunk or main limbs, the tree is already in decline, or a dead limb threatens people or property. Get a certified arborist's written assessment before the board votes, as the Forest Service recommends for any extensive pruning. Our guide on how to plan an HOA tree maintenance program covers inventories and arborist reports.

Contract and notice wording

Add a mistletoe clause to the tree contract so the work is measurable: "Contractor shall remove visible mistletoe from the trees listed in Schedule A by pruning each infected branch at least 6 inches below the point of attachment, cutting to a lateral branch or branch collar, between [December 1] and [January 31]. Contractor shall not remove more than one third of any tree's live canopy in one season. Oak wounds shall be painted the same day. Infections in the trunk or scaffold limbs shall be reported to the association in writing with photos, not cut. Work shall be supervised by an ISA Certified Arborist." Motion for the minutes: "Move that the association hire [company] to prune mistletoe from the common area trees on the attached list this dormant season at a cost not to exceed $[amount], to inspect the same trees each winter, and to report trees recommended for removal to the board before any removal." Newsletter paragraph: "The green clumps in the oaks along [location] are mistletoe, a parasitic plant spread by birds. This winter the association's arborist will prune infected limbs on common area trees. If your own trees have mistletoe, pruning them during the same season helps keep it from spreading back. Please do not climb common area trees or cut limbs yourself." The board's authority over mistletoe in an owner's tree comes from the declaration, usually through a general maintenance or nuisance covenant. Read that language before sending anyone a letter about their tree.

A sample year and the usual mistakes

A sample program. November: walk the common area once the leaves drop, map every infected tree, and photograph each one. December: get the arborist's assessment and bids. December and January: prune, starting with trees over walks, play areas and parking. February: update the tree map with what was cut, what was left and any tree recommended for removal. Each winter after: repeat the walk and cut new clumps before they mature. For Colorado pines, do the crown rating every two to three years instead. The mistakes that keep mistletoe coming back: knocking off the green clump instead of cutting the branch, topping a whole oak to get at the infection, pruning Texas oaks in spring, paying to remove ball moss, treating one tree and ignoring the infected trees next to it, keeping a tall infected pine above young pines, and dropping the annual inspection after one clean winter.

Sources

These guides are general education for HOA boards and residents, not legal, tax, or financial advice. Rules vary by state and by your community's governing documents - check with a professional for your situation.

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