Heavenly Blue is sold as garden seed across Europe and North America, and none of the national laws below prohibits growing it as a garden climber; a few US states regulate morning glories as weeds. What the law does regulate is ergine (LSA), the alkaloid in the seeds, and in some places the seeds as food or as something meant for human consumption. We checked the law texts on 10 October 2026. This is not legal advice: laws change, and courts and customs can apply them differently from how the text reads.
Overview
| Country | LSA itself | The plant and its seeds | Source |
|---|---|---|---|
| Netherlands | not named in the Opium Act | not named | Opiumwet |
| Germany | falls within an NpSG substance group | not named | NpSG |
| United Kingdom | Class A ("Lysergamide") | not named; supply for consumption caught by the Psychoactive Substances Act | MDA 1971 |
| United States | Schedule III | not named federally | 21 CFR 1308.13 |
| Louisiana | as federal | Ipomoea violacea named; ornamental growing exempt | R.S. 40:989.1 |
| Canada | not listed | not named | CDSA |
| Australia | likely covered as a derivative of lysergic acid | prohibited in food | Poisons Standard |
| Belgium | not checked | Ipomoea spp. may not be sold as food | KB 31 August 2021 |
Netherlands
List I of the Opium Act (Opiumwet) names lysergide (LSD) and "the mono- and di-alkylamide, pyrrolidine and morpholine derivatives of lysergic acid". Ergine is the plain amide of lysergic acid, with no alkyl group, so it is not covered by that wording. The words ergine, lysergamide and Ipomoea do not appear anywhere in the act (Opiumwet, version in force from 17 September 2026). Morning glory seed is sold openly in garden centres and in smartshops.
Germany
The Narcotics Act (BtMG) lists LSD in Annex I and does not name LSA or Ipomoea (BtMG Anlage I). The New Psychoactive Substances Act (NpSG) does reach LSA: Annex 1, number 5.2 covers derivatives of Δ9,10-ergolene, and its definition allows hydrogen on both positions of the amide, which describes LSA. Section 3 of the act prohibits trading, manufacturing, bringing into Germany, acquiring and possessing such substances (NpSG).
The act's definition of a preparation excludes "naturally occurring mixtures", and the plant is not named. Whether whole seeds fall under the NpSG is therefore not settled by the text, and we found no court ruling or official guidance on it. Growing the plant from garden seed is not addressed in either law.
United Kingdom
The Misuse of Drugs Act 1971 lists "Lysergamide" in Schedule 2, Part I, which makes LSA a Class A drug. The same part also covers "any preparation or other product containing" a listed substance (legislation.gov.uk). The plant and its seeds are not named, and the act has no exemption for them. We found no case law or official guidance on whether whole morning glory seeds count as such a product.
Separately, the Psychoactive Substances Act 2016 makes it an offence to supply a psychoactive substance when the supplier knows, or is reckless as to whether, it is likely to be consumed for its psychoactive effects (section 5). The exemptions in Schedule 1 cover things like controlled drugs, medicines, alcohol and tobacco, and contain nothing about plants or seeds (Schedule 1). Heavenly Blue is widely sold in the UK as garden seed; the RHS lists it with an Award of Garden Merit.
United States
Federal law lists "Lysergic acid amide" in Schedule III with DEA code 7310 (21 CFR 1308.13(c)). Ipomoea is not named in the federal schedules.
Louisiana
Louisiana is the clearest example of a state that names the plant. Revised Statutes 40:989.1 defines "hallucinogenic plant" as any part of a list of species that includes Ipomoea violacea and Rivea corymbosa, and makes it an offence to deal in material "intended for human consumption" that contains one. Subsection D then states that the section does not apply to "the possession, planting, cultivation, growing, or harvesting of a hallucinogenic plant strictly for aesthetic, landscaping, or decorative purposes" (R.S. 40:989.1). Ipomoea tricolor is not named separately; I. violacea is the older name that is often used for the same plant (see the plant page).
Other states may have their own rules. We did not verify them state by state. Some states regulate morning glories as weeds rather than as drugs: Arizona lists Ipomoea tricolor as a Class C noxious weed (University of Arizona Extension).
Canada
The Controlled Drugs and Substances Act lists LSD in Schedule III and lysergic acid as a precursor in Schedule VI. Lysergamide and lysergic acid amide do not appear in the act, and neither does Ipomoea (CDSA, current to 21 September 2026).
Australia
The Poisons Standard lists lysergic acid and lysergide in Schedule 9, the prohibited substances. LSA is not named, but the standard states that a reference to a substance includes every "active principle or derivative" of it, and LSA is a derivative of lysergic acid (Poisons Standard June 2026). We found no official ruling that applies this to LSA, so this is likely rather than settled.
The food code is explicit. Schedule 23 of the Australia New Zealand Food Standards Code, the list of prohibited plants and fungi, names Ipomoea violacea, Ipomoea tricolor (as a cross-reference to I. violacea) and several other morning glories (Food Standards Code, Schedule 23). That means they may not be sold as food or in food.
Belgium
Belgium keeps a list of dangerous plants that may not be placed on the market as food or in food. The decree of 31 August 2021 replaced the older list from 1997 (KB 31 August 2021), and its list 1 includes "Ipomoea spp." (Belgisch Staatsblad, 30 January 2024, p. 11320). We did not check the Belgian drug decree for LSA.
What this means in practice
Across all of these countries, buying Heavenly Blue seed to grow a climber on a fence is ordinary gardening. The legal risk starts where the seeds are treated as something to take: several countries control LSA itself, the UK targets supply for consumption, and Australia and Belgium forbid the seeds in food. Do not carry seeds or anything made from them across borders with that purpose, and do not order them into a country where LSA is controlled.