Quick answer
When is the best time to trim trees in Phoenix? The best time to trim most trees in Phoenix is late spring, from April through early June, before monsoon season starts in mid June. Thinning the canopy then lets storm winds pass through instead of pushing the tree over. Palms are the exception: trim them in early summer after they flower and set seed. Avoid heavy pruning in the peak of summer and in winter.
Key takeaways
- Late spring, April to early June, is the main trimming window for mesquite, palo verde, ash, ficus and pines.
- Palms get trimmed once a year in June or July, after the seed pods form.
- Citrus is trimmed lightly in late winter or early spring, after the last frost risk and before it flowers.
- Do not remove more than a quarter of the canopy in one visit, and never top a tree.
- A hanging or split limb is trimmed now, whatever the month.
Why does timing matter so much in Phoenix?
Phoenix has two things most cities do not: a monsoon season with sixty and seventy mile an hour outflow winds, and summers hot enough to sunburn a tree that suddenly loses its shade. Trimming at the wrong time exposes you to one or the other. Trim too late and the tree goes into July carrying a dense, heavy canopy that acts like a sail. Trim too hard in August and the bark on the newly exposed limbs scalds.
The monsoon is the bigger risk. Most of the trees the crew removes after a storm are not diseased or old. They are healthy trees that were never thinned, on shallow roots, in wet soil, hit by a gust. A spring thinning is the cheapest insurance a Phoenix homeowner can buy.
What is the best month to trim each kind of tree?
Different trees want different windows. Here is how we schedule the trees we see most across the Valley.
| Tree | Best time to trim | Why |
|---|---|---|
| Mesquite (Chilean, velvet) | April to early June, light touch again in fall | Fast, heavy growth on shallow roots. Thin before the wind arrives. |
| Palo verde | April to May, after bloom | Let it flower, then take weight off the long limbs. |
| Ficus | Late spring, and again in early fall if it is dense | Thins into a sail quickly. Two light trims beat one hard one. |
| Ash, mulberry, sissoo | Late winter to early spring while dormant, or late spring | Deadwood and clearance are the main work. |
| Eucalyptus and Aleppo pine | Late spring | Weight reduction on long limbs before monsoon gusts. |
| Citrus | Late February to March | After frost risk, before flowering. Light shaping only. |
| Olive | Late winter or early spring | Dormant, easy to shape, less sap. |
| Fan, date and queen palms | June to July, once a year | Seed pods have formed and can come off with the dead fronds. |
| Oleander and hedges | Spring, and again in early fall | Two light cuts keep them dense and straight. |
What should you avoid?
- Topping. Cutting every limb back to a stub produces weak, fast regrowth that snaps in the next storm and shortens the life of the tree. We do not do it.
- Over-thinning. Taking more than about a quarter of a healthy canopy in one visit stresses the tree and invites sunburn. Lion-tailing, where all the inner growth is stripped and only tufts are left at the ends, is the most common version of this in Phoenix and it makes limbs more likely to break, not less.
- Hard pruning in July and August. Newly exposed bark scalds in the peak heat. If a limb has to come off in summer, fine, but save the big shaping jobs for spring or fall.
- Hard pruning mesquite and palo verde in winter. They are dormant and slow to seal cuts. Light deadwood removal is fine. Major work waits for spring.
- Hurricane-cutting palms. Stripping a palm down to a few upright fronds starves it. Remove the dead fronds and the pods and leave the green crown.
How often should Phoenix trees be trimmed?
Fast growers such as mesquite, palo verde, ficus and sissoo do best with a light thinning every year or two. Slower shade trees such as ash, olive and pine can go two to three years between real trims, with deadwood removed as it appears. Palms are a yearly job. A useful test: stand under the tree and look up. If you cannot see patches of sky through the canopy, it is time.
What if a storm already damaged the tree?
Then the calendar does not apply. A split limb, a hanging branch or a tree leaning toward the house gets handled now, whatever the month. We answer the phone around the clock and run storm calls first. Most storm jobs in the Phoenix area get a same-day or next-day visit. See storm damage cleanup for what to do while you wait.
What does a spring trim from Bros include?
Every trimming job is quoted on site by the person who will do the work. It includes canopy thinning so wind and light pass through, deadwood removal, clearance from the roof, walls, pool and power drop, weight reduction on overextended limbs, and a full cleanup: brush chipped, yard raked, rock put back, pool skimmed. Details are on the tree trimming page. Estimates are free and usually the same day you call.
Questions people ask
Can you trim trees in Phoenix in the summer?
Light work, yes. Removing a hanging limb, clearing a roof or taking out deadwood is fine any month. Save major shaping for spring or fall, because bark exposed in July and August heat can sunburn.
When should palm trees be trimmed in Arizona?
Once a year in June or July, after the palm has flowered and the seed pods have formed. Trimming then removes the pods before they drop and gets dead fronds off before monsoon winds.
Is it too late to trim before monsoon season?
If the storms have not started, no. Late May and early June trims are the most common jobs on our calendar. Even in July, thinning a dense mesquite or ficus reduces the risk for the rest of the season.
When is the best time to trim citrus in Phoenix?
Late February to March, after the last frost risk and before the tree flowers. Keep it light: remove deadwood, suckers and crossing branches, and leave the canopy to shade the trunk.
How much of a tree can be trimmed at once?
No more than about a quarter of the live canopy in one visit for a healthy tree. Taking more stresses the tree and exposes it to sunburn and weak regrowth.
Owner and lead climber, Bros Tree Care LLC. Jason and his brothers run a family tree crew out of North Phoenix, rated 4.9 stars across 119 Google reviews. About the crew.
