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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon639
    Verified arboricultural services reviews

Top-Rated Arborists in Diamond Bar - Updated Nov 2026

Avatar for Silva Tree Service
Silva Tree Service
4.8(
439
)
Tree RemovalTree TrimmingTree Stump - Remove+3 more

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2003

Free estimates

Offers commercial services

"Silvas tree service came ready to work! They were able to help me trim down my backyard tree with ease and speedy service. The guys were so nice and clean. They left my property looking way better. Thanks Silvas tree service."
Silva Tree Service
Silva Tree Service
Silva Tree Service
Silva Tree Service
Silva Tree Service

+32

Response time3 hrs
Response rate100%
114 neighbors recently requested a quote
Avatar for 3-D Tree Services, Inc.
3-D Tree Services, Inc.
4.6(
232
)
Tree TrimmingTree RemovalTree Removal - For Business+1 more

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Robert Duran and his crew from 3-D Tree Services, Inc. were top notch today from the quote/survey to completion! I am amazed how quick, efficient, professional and kind this entire team is to work with! This was a tough job (Old/Invasive Pepper Tree). The crew was in sync with each other, allowing the process to be quick and safe. I’m so happy I found them through Home Advisor and the response to my inquiry was quick. Thank you everyone! Referrals will flow!"
Response time2 hrs
5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Maya Tree Service
Maya Tree Service
4.5(
92
)
Tree Stump - Remove

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

"Fast efficient and professional. Will be happy to hire again. Extremely knowledgeable about my trees. Gave great advice. Victor was punctual and cleaned up everything prior to leaving. Used twice and will definitely hire again."
6 neighbors recently requested a quote
Recommended by92%of homeowners
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Arborists FAQs, answered by experts

There are a few general rules to follow that will help you prune your trees correctly. One of the most important rules is to prune during the correct season for the type of tree you have. Typically, pruning should be during late winter. For younger trees, you should not remove more than a ⅓ of the tree's crown when pruning. Also, remember to remove dead and diseased branches first, then proceed with pruning the rest of the tree.

Yes, cutting a tree's roots can cause it to fall, particularly if major support roots are severed. In extreme cases, trimming roots can affect the tree's structure and stability. Many crucial roots are located just below the soil's surface. If you make severe cuts to roots more than 2 inches in diameter, you risk impacting the tree's water flow and its ability to withstand severe winds or storms. Even cutting roots less than half an inch in diameter under or outside the tree's canopy can cut off its water supply, causing it to decline, die, and eventually topple.

The best time to transplant a tree is when it is dormant. For many trees, this means either in the fall after the leaves have dropped (around October or November) or in early spring before new growth begins (around March). The ideal timing can depend on the type of tree. Deciduous trees do well when moved in early spring or fall, while evergreens are best transplanted in early spring or late summer. For example, pine trees are best moved in early fall, but maples prefer late fall. Avoid transplanting in winter, as the frozen or hard, cold soil poses a significant risk to the roots and prevents the tree from acclimating properly.

You will know that an oak tree needs to be removed when you see vertical cracks or dead branch stubs, which indicate internal decay. Other signs include trunk rot near the base of the tree and sprouts or small branches coming from the trunk.

Though summer is not ideal, you can do some light pruning during this time of year. Just make sure it’s not excessive. Vigorous pruning will stress the tree and impact next year’s growth. Generally, August to September are the best summer-pruning months, particularly for fruit trees.

The Diamond Bar, CA homeowners’ guide to arboricultural services

From average costs to expert advice, get all the answers you need to get your job done.