Texas Marijuana Defense Lawyers

Marijuana law in Texas has changed significantly since 2019 and not in the direction most people expect. Texas has not legalized marijuana. What it has done is legalize hemp under HB 1325 (2019), which created a legal definition of hemp as cannabis with a THC concentration of 0.3% or less by dry weight. That distinction (between hemp and marijuana) has created a forensic identification problem that has affected marijuana prosecutions across Texas and that remains a live defense argument today.

At the same time, Texas treats THC extracts, oils, and concentrates as Penalty Group 2 controlled substances rather than marijuana which is a distinction that dramatically increases the penalty for what many people assume is a marijuana charge. A THC vape pen that would be a misdemeanor if it contained plant material is a felony based on the extract classification.

Deandra Grant Law defends marijuana charges across North and Central Texas. Managing Partner Deandra Grant holds a Master’s Degree in Pharmaceutical Science, a Graduate Certificate in Forensic Toxicology, and the ACS-CHAL Forensic Lawyer-Scientist designation. Partner Douglas Huff holds the same ACS-CHAL designation.

The Hemp Identification Defense

Texas Health and Safety Code §481.002 defines marijuana as the Cannabis sativa plant and its derivatives. Under HB 1325, hemp is defined as Cannabis sativa with a THC concentration at or below 0.3% on a dry weight basis. The two are botanically identical. The only legal distinction is the THC concentration.

This creates a fundamental identification problem for marijuana prosecutions. A law enforcement officer cannot distinguish hemp from marijuana by sight, smell, or field test. Colorimetric field tests detect the presence of THC but do not quantify it. A plant that smells like marijuana, looks like marijuana, and tests positive on a field test may be legally compliant hemp.

The Texas Court of Criminal Appeals and multiple appellate courts have addressed the evidentiary consequences of this ambiguity. For the state to prove that seized cannabis is illegal marijuana rather than legal hemp, it must produce laboratory analysis that quantifies the THC concentration and establishes it exceeds 0.3%. A positive field test is not sufficient. Many DPS crime labs were not initially equipped to perform the quantitative testing required, which led to widespread dismissals of marijuana charges in 2019 and 2020.

While DPS labs have since developed quantitative testing protocols, the identification requirement remains. The defense should examine whether the laboratory’s analysis established THC concentration quantitatively, whether the method was validated for plant matrix, and whether the reported concentration exceeds the 0.3% threshold by a margin that accounts for the method’s uncertainty.

THC Concentrates and the Penalty Group 2 Problem

Texas law treats marijuana plant material and THC extracts fundamentally differently. Under Texas Health and Safety Code §481.103, THC extracted from the cannabis plant (including oils, waxes, shatter, dabs, and the oil in vape cartridges) is classified as a Penalty Group 2 controlled substance, not as marijuana.

The penalty consequences of this distinction are dramatic:

• Marijuana plant material (less than 2 oz): Class B misdemeanor — up to 180 days, fine up to $2,000.

• THC concentrate (less than 1 gram): State jail felony — 180 days to 2 years, fine up to $10,000.

A single THC vape cartridge containing a gram or two of oil is charged as a state jail felony based on the weight of the entire cartridge, including the carrier oil and hardware-adjacent liquid. The charge level is not based on the THC content alone. A cartridge that weighs 3 grams total but contains only 0.8 grams of active THC oil is charged on the 3-gram total weight if the prosecution counts the mixture.

Many defendants (particularly those who purchased vape products in states where cannabis is legal and brought them into Texas) are unaware that the product they purchased legally elsewhere is a felony in Texas. That lack of knowledge does not eliminate the charge, but it is relevant to the defense analysis.

The Smokable Hemp Ban: March 31, 2026

Texas Senate Bill 3 (89th Legislature) banned the sale and possession of smokable hemp products effective March 31, 2026. Smokable hemp (hemp flower, hemp cigarettes, and similar products) had been legal under HB 1325 because their THC concentration fell below 0.3%. SB 3 criminalizes these products regardless of THC concentration.

The enforcement consequence of this ban has increased the risk of wrongful arrest for individuals possessing legal hemp products purchased before the ban or in states where hemp products remain legal. Law enforcement cannot distinguish smokable hemp from marijuana by appearance or field test. A person arrested for marijuana possession who was actually in possession of compliant hemp faces a charge that requires the prosecution to prove THC concentration above 0.3% which is the same forensic identification burden that existed before the ban, now applied in a legal landscape where smokable hemp products are no longer lawful regardless of concentration.

If you were arrested for marijuana possession involving a product you believed to be legal hemp, the forensic identification question is the central issue in your case. Contact Deandra Grant Law immediately.

Texas Marijuana Penalty Structure

Possession of Marijuana (§481.121)

• 2 ounces or less: Class B misdemeanor — up to 180 days, fine up to $2,000.

• More than 2 oz to 4 oz: Class A misdemeanor — up to 1 year, fine up to $4,000.

• More than 4 oz to 5 lbs: State jail felony — 180 days to 2 years, fine up to $10,000.

• More than 5 lbsto 50 lbs: Third-degree felony — 2 to 10 years, fine up to $10,000.

• More than 50 lbsto 2,000 lbs: Second-degree felony — 2 to 20 years, fine up to $10,000.

• More than 2,000 lbs: First-degree felony — 5 to 99 years or life, fine up to $10,000.

Delivery of Marijuana (§481.120)

Delivery penalties escalate more quickly than possession. Delivery of any amount up to one-quarter ounce without remuneration is a Class B misdemeanor. Delivery for remuneration or delivery above the quarter-ounce threshold escalates through the misdemeanor and felony ranges based on weight, reaching a first-degree felony for delivery of 2,000 pounds or more.

THC Concentrate Possession and Delivery — Penalty Group 2

As noted above, THC concentrates are charged under the Penalty Group 2 schedule (§481.116 for possession, §481.113 for delivery), not the marijuana statute. The weight-based penalty structure begins at state jail felony for less than 1 gram and escalates to first-degree felony with enhanced minimums at 400 grams or more.

Defense Strategies in Marijuana Cases

Hemp identification challenge. Where the seized material is cannabis plant material, the state must prove THC concentration exceeds 0.3%. The defense should obtain and independently review the laboratory’s quantitative THC analysis and assess whether the methodology and reported concentration satisfy the identification burden beyond a reasonable doubt.

Article 38.23 — suppression of illegally obtained evidence. Texas’s exclusionary rule with no good faith exception suppresses evidence obtained through an unlawful stop or search. Marijuana cases frequently arise from traffic stops where the officer’s claimed basis for the stop or the scope of the search is contestable. A successful suppression motion eliminates the evidence and ends the prosecution.

Constructive possession — knowledge and control. Possession requires proof that the defendant exercised actual care, custody, control, or management over the substance with knowledge of its nature. Marijuana found in a shared vehicle or residence requires the prosecution to establish affirmative links between the defendant and the substance. The absence of the defendant’s fingerprints, the presence of another person’s belongings near the substance, and inconsistencies in the officer’s account of the discovery are all relevant.

Weight accuracy at penalty thresholds. For felony marijuana charges, the weight determines the charge level. The weight includes stems and seeds as well as usable plant material. The defense should independently verify the weight and the methodology used, particularly where the measured weight places the charge near a threshold between misdemeanor and felony, or between felony tiers.

Why Deandra Grant Law

• ACS-CHAL Forensic Lawyer-Scientist — both Deandra Grant and Douglas Huff.

• Digital forensics training. Cell phone data, social media, CDR records, and metadata examined at the data level.

• 30+ years of criminal defense experience. 500+ trials to verdict across North and Central Texas.

• 17 published law books. Including Arrested for Drugs in Texas

• Texas Super Lawyer since 2011. AV® Preeminent rated by Martindale-Hubbell®.

• Offices in Dallas, Fort Worth, Allen, Denton, Waco, and Rockwall. North and Central Texas courts served directly.

• Federal defense capability. James Lee Bright handles federal charges in all four Texas federal districts.

If you are facing marijuana charges in Texas, call (214) 225-7117 for a free, confidential consultation. Or schedule online at texasdwisite.com.