Genetics
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Ruderalis hybrid retail shopping label — not genetics

Ultra Lemon Haze Strain

Ultra Lemon Haze is a ruderalis hybrid strain (Sour Diesel × Auto #1). 58-day flowering; 2 breeder releases.

Median THC
Flowering
48–68 days
Breeder releases
2
Avg rating

Flowering type

Autoflowering This is an autoflowering cultivar — a genuine ruderalis-derived genetic trait (it flowers by age, not light cycle). That’s a real, heritable distinction, unlike the indica/sativa label above.

Genetics & Lineage

Parents
This strainUltra Lemon Haze
Descendants (3)

Breeder releases (2)

BreederTHCFloweringSeedsRating
Auto Seeds68dfeminized
Stone Free Seeds48dfeminized

About Ultra Lemon Haze

To create Ultra Lemon Haze we crossed the Cannabis Cup winning Lemon Haze with a select Sour Diesel developed in northern California. This was then crossed with our Auto #1 to produce a stable strain that is truly unique. These genetics and the resulting strain have created something incredibly special which has made it one of our favourites. The taste is of sharp citrus, lemons and pink grapefruit, whilst maintaining the fuel like undertones of the Sour Diesel. The Super Lemon Haze was a multiple cup winner for good reason and these traits have carried through into Ultra Lemon Haze. Sativa dominant, the buds are long and dense with typical sativa shape shade leaves. The smoke is spectacular and the stone distinctly psychedelic with an excellent balance between a physical body buzz and soaring cerebral high. Ultra Lemon Haze can be grown well both indoors and out, but indoors requires a good level of control and management to obtain the best results. Average height will be 60-70cm indoor but some phenotypes can extend up to 80cms+ if grown outdoors in optimal conditions. Due to the dominance of the Sativa genes and the lower percentage of Ruderalis this is not a standard autoflower

Frequently asked questions

What are the genetics of Ultra Lemon Haze?
Ultra Lemon Haze comes from Sour Diesel × Auto #1.
Is Ultra Lemon Haze indica or sativa?
Ultra Lemon Haze is classified as ruderalis hybrid.
How long does Ultra Lemon Haze take to flower?
Ultra Lemon Haze flowers in about 48–68 days.
Is Ultra Lemon Haze available as feminized or autoflowering seeds?
Ultra Lemon Haze is offered as: feminized.