Live oaks and turf in Northeast Florida: which rule protects the tree, and what Florida's arborist law changes

Three sets of rules can reach the same oak

Before anyone draws a turf edge near a mature tree, find out which rules reach it. In Northeast Florida there are usually three layers. A state statute, section 163.045, limits what a city or county can demand when a risky tree comes down. A state turf rule, Rule 62-308.100 of the Florida Administrative Code, says when synthetic turf may go inside a tree's drip line. And your city or county code decides which trees are protected, and which removal or digging needs a permit.

The local layer depends on where the lot sits. St. Johns County's Land Development Code governs development in the unincorporated area of the county. Nassau County's tree ordinance for Amelia Island applies only within the unincorporated areas of the island. Inside a city limit, ask that city. This page summarises the rules we opened, as checked on 12 September 2026. It is not legal advice, and each section names the office that can answer for your lot.

What Florida's arborist law changes, and what it does not

Section 163.045, Florida Statutes, says a local government may not require a notice, application, approval, permit, fee or mitigation for pruning, trimming or removing a tree on residential property if the owner holds documentation that the tree poses an unacceptable risk to persons or property. Subsection (3) bars a local government from requiring you to replant a tree removed that way. The section dates from 2019 and was amended in 2022.

Each condition is narrow. The documentation has to be an onsite assessment done under the procedures in Best Management Practices – Tree Risk Assessment, Second Edition (2017), signed by an ISA-certified arborist or a Florida licensed landscape architect. A tree counts as an unacceptable risk only if removal is the only practical way to bring its risk below moderate. Residential property means a single-family, detached building on a lot actively used for single-family purposes. The section does not apply to delegated mangrove protection.

Now the limits that matter for a turf project. The statute's test is risk to persons or property. Being in the way of a lawn or a putting green is not part of that test. The statute speaks to pruning, trimming and removal, and says nothing about digging, grading or laying a base under a tree you keep. It reaches a single-family, detached home, not a condominium or a commercial site. And its words address a local government. They do not mention an HOA.

Florida's turf rule draws its own line at the drip line

Rule 62-308.100, effective 19 May 2026, sets minimum standards for synthetic turf on single-family residential properties of 1 acre or less. Paragraph (8)(a) says installation cannot compromise the health of nearby trees, including damage to tree roots. Paragraph (8)(b) says synthetic turf shall not be installed inside tree drip lines, on the property or on adjacent properties.

There are two ways past that line. The tree is a noxious weed as defined in Chapter 581, Florida Statutes. Or a certified arborist, using site-specific information and best professional judgment, certifies that installation within that drip line would not be harmful to the tree. Note the difference from s. 163.045. That statute accepts an ISA-certified arborist or a Florida licensed landscape architect, and the document is about risk from a tree. The turf rule names a certified arborist, and the certification is about harm to a tree that stays.

Two consequences for planning. Your neighbor's tree counts, because the rule names drip lines on adjacent properties. And a risk assessment for a tree coming down is a different document from a certification that turf will not harm a tree staying up. For how the same rule treats infill and base material, see our guide to Florida turf infill rules.

St. Johns County: the one-acre line and the specimen table

In unincorporated St. Johns County, Article IV of the Land Development Code (edition dated 11 August 2025) prohibits removing or damaging a Protected Tree, or clearing land, without a county permit. The definitions in Article XII (edition dated 2 June 2026) set a Protected Tree at 8 inches or more in diameter at breast height (DBH). Species on the Florida Exotic Pest Plant Council and state noxious weed lists, and all pines, are excluded. East of the Intracoastal Waterway, Tolomato River or Matanzas River, a native Southern red cedar or sand live oak is protected from 2 inches.

Section 4.01.05.C.11 holds the exemption most homeowners ask about. Land clearing or Protected Tree removal needs no permit on an existing single-family home site on a lot of record of 1 acre or less. On a larger lot of record, the same exemption covers only land within 100 feet of the perimeter of the house. Historic and Specimen Trees still need County Administrator approval unless diseased or a substantial threat to the existing house. The code puts the burden of proving an exemption on the person claiming it.

Specimen size depends on the species, under Table 4.01.05.D.3.a. A live oak becomes a Specimen Tree at 50 inches DBH, a sand live oak at 49, a laurel oak at 48 and a southern magnolia at 61. Where grade cuts are necessary under a Historic or Specimen Tree, the code requires proper root pruning, all excavation inside the tree's Protected Area by hand, and roots 2 inches and larger cut evenly. The same edition sets a fine of $5,000 for each Specimen Tree removed without authorization.

The exemption names land clearing and tree removal. Separate prohibitions in Section 4.01.05.B bar changing the earth grade inside the Protected Area of a preserved Protected Tree without County Administrator approval, and changing drainage so water is trapped there. Article XII sets that Protected Area at the drip line. Ask St. Johns County's planning and development review staff how those apply before a base is dug under a canopy you are keeping. Our Switzerland, Florida page covers the acre line on larger parcels.

Ponte Vedra Zoning District: its own tree section, and the 1-acre exemption does not apply

The Ponte Vedra Zoning District carries its own tree rules on top of Article IV. Ordinance 2020-38, Section VIII.U, sets a lower Protected Tree threshold there — 10 inches DBH, instead of the county's 8-inch threshold — and reaches every existing, proposed or reconfigured residential lot in the district. Section VIII.U.3 states this section applies in addition to Article IV, and that its provisions prevail where the two conflict. Article IV's exemption for a single-family home site on a lot of 1 acre or less does not carry into the district: a Protected Tree Removal Permit is required there regardless of lot size.

Mitigation depends on where the trunk sits. No mitigation is owed for a Protected Tree whose trunk at ground level falls within 5 feet of a building footprint, a driveway of 800 square feet or less, or a perimeter fence line. Inside 5 feet of a pool, patio, gazebo, sidewalk, driveway, accessory structure or similar improvement, mitigation runs 1 inch of replacement DBH for each inch removed. Every other Protected Tree removed under a permit carries a 2-inch-for-1-inch replacement ratio. Where a lot cannot fit all the required replacement trees on site, the shortfall is paid into the St. Johns County Tree Bank Fund on a per-inch basis; the county sets that rate, and it can change, so ask St. Johns County for the current figure rather than relying on a number printed here.

A Protected Tree Removal Permit denied by the County Administrator can be appealed to the Ponte Vedra Zoning and Adjustment Board (PVZAB), which also hears variance requests from these tree provisions. Ask St. Johns County's planning and development review staff, before the layout is drawn, whether a given lot sits inside the Ponte Vedra Zoning District — the district boundary, not the acre count, decides which set of rules applies.

Unincorporated Amelia Island: a 5-inch threshold and a Tree Commission

Nassau County's Unincorporated Amelia Island Tree Protection and Replacement Ordinance, Ordinance No. 2021-012, was adopted on 9 August 2021 and took effect on 7 February 2022. It is Section 37.02 of the county's Land Development Code, and it applies within the unincorporated areas of Amelia Island. The county's summary sets a lower threshold than St. Johns County. A Protected Tree is any healthy, non-invasive tree of 5 inches DBH or more, and removing one needs a county tree removal permit.

A live oak of 40 inches DBH or more, or 60 inches with multiple trunks, is a Specimen Tree. The summary says there are no exemptions for specimen tree removal. It needs approval from the Nassau County-Amelia Island Tree Commission, with a justification such as a dead, fallen or compromised tree, or no feasible design alternative that keeps the tree. The summary adds that removal applications are approved only for just cause, such as new development or hazardous trees.

Some work needs no permit. The summary lists the state-law risk exemption, dead or fallen trees, diseased trees as determined by an ISA-certified arborist, emergencies such as storm damage, and proper pruning. Pruning must still meet ISA and ANSI A300 standards, and tree abuse is subject to penalties. For a removal application, a survey of three or fewer trees need not be certified by an ISA-certified arborist. A survey of four or more must be.

For construction, the summary sets a tree protection zone of six times the DBH, with a 6-foot minimum, and prohibits development activity inside it, including all digging. Its worked example for a 20-inch tree gives 15 feet, more than six times 20 inches. Ask the County Arborist (904-530-6300) which figure applies to your tree, and whether that standard reaches a yard project. Our Amelia City page covers the island setting.

Atlantic Beach sets a trunk setback; Jacksonville needs a call

The City of Atlantic Beach's Artificial Turf Installation Guidelines — the document carries no date, and we opened it on 12 September 2026 — say turf should not be installed under tree drip lines where possible. If it must go under a drip line, it must sit at least 18 to 24 inches from the base of any tree. Beneath trees, the subbase may be no more than 3 inches deep, lightly compacted only, and permeable to water and oxygen. Elsewhere the same guidelines call for a permeable aggregate base at least 4 inches deep.

The guidelines bar artificial turf from any City right-of-way, and say an installation must not cause water to pool or concentrate near the base of trees. The city's review asks for a site plan showing locations relative to trees and property lines, and the aggregate subbase must be inspected and approved before the turf goes down. Where the state turf rule reaches your lot, it adds the certified arborist step for turf inside a drip line. Plan for both, and ask the city how it reviews them. More on the city is on our Atlantic Beach page.

For Jacksonville, we could not open the landscape and tree protection provisions of the Ordinance Code, Chapter 656 Part 12, when we checked. Ask the City of Jacksonville Planning and Development Department how Part 12 applies to an existing single-family lot before you plan any removal, or any digging under a canopy.

Where the turf edge goes, and when to call an arborist first

Settle the tree questions before the estimate. First confirm whether the lot is inside a city or in an unincorporated area, and which code reaches it. Then measure each tree near the project at breast height and compare it with that code's protected and specimen thresholds. Mark every drip line that reaches the yard, including trees next door.

Bring in an arborist first in three cases: you want a tree removed, you want turf inside a drip line on a lot the state rule covers, or grading is planned inside a protected tree's drip line. A risk assessment and a no-harm certification answer different questions, so tell the arborist which one you need. If a Specimen Tree would come down, the county's decision comes before the layout.

Keeping the turf edge outside every drip line avoids the state rule's drip-line certification, though paragraph (8)(a) still bars harm to a nearby tree's roots. Our article on artificial turf around trees explains why the base is where roots get hurt. If your project also needs HOA approval, read what Florida law says about HOAs and turf.

We bring 13 years' experience to residential turf, pet turf and putting greens, and we install across Northeast Florida. On a free visit we measure and check the ground. The custom layout you approve can hold the edge where your arborist and your county say it belongs. Call 303-349-2368 or request a free estimate.