Red Mimosa XL

Red Mimosa XL Auto Cannabis Seeds by Sweet Seeds

Red Mimosa XL Auto is an autoflowering cannabis seed variety from Sweet Seeds that produces striking red and purple flowers in roughly 85% of specimens. A cross between Sweet Mimosa XL Auto and Red Strawberry Banana Auto, this 60% indica hybrid delivers dense, resin-heavy buds with up to 25% THC — and goes from seed to harvest in just 8 weeks. If you want colour, flavour, and speed in one packet, this is the seed to grab.

Why Red Mimosa XL Auto Seeds Stand Out

Sweet Seeds spent several generations stabilising this line, and the result is a strain where the vast majority of plants flush red or purple during flowering. That's not just cosmetic — it's a sign of anthocyanin production in the plant tissue, and it makes your grow room look absolutely spectacular under white light. We've seen a lot of "red" strains come and go over the years; the difference here is consistency. Sweet Seeds quote 85% of specimens developing red flowers, which is about as reliable as autoflower genetics get.

The genetics are solid underneath the colour, too. Red Mimosa XL Auto descends from Mimosa — a strain famous for its citrus-forward terpene profile — crossed into Sweet Seeds' proprietary Red Family line. The result is an intense, fruity aroma faithful to the Mimosa parentage, layered with nutty and spicy undertones that give it genuine complexity. Crack open a cured jar and you get sweet citric orange up front, followed by something almost walnut-like on the back end. It's distinctive.

Red Mimosa XL Auto Grow Specifications

Red Mimosa XL Auto Yield and Growing Tips

Red Mimosa XL Auto produces 450–550 g/m² indoors, which puts it firmly in the upper bracket for autoflowers. Outdoors, expect up to 160g per plant — respectable for a strain that finishes this quickly. The height range of 60–130 cm means you can comfortably run these in a smaller tent without worrying about them outgrowing your space. In an 80x80 cm setup, you could fit four plants and still have room for airflow.

The 8-week seed-to-harvest timeline is one of the fastest we carry for a strain with this kind of output. That's not "8 weeks of flowering" — that's 8 weeks total, from the moment the seed cracks. If you're running a perpetual cycle or just impatient (no judgement), this speed is hard to beat. The buds come out dense and compact, coated in a generous layer of trichomes that makes them look almost frosted.

One honest note: autoflowers don't respond to light-cycle changes the way photoperiod strains do, so you can't extend veg time to increase size. What you see in that 60–130 cm range is what you get. If you want massive trees, a photoperiod strain is the better call. But if you want fast, reliable, colourful harvests with minimal fuss, Red Mimosa XL Auto delivers.

Aroma, Flavour, and Effects of Red Mimosa XL Auto

The terpene profile on this strain is genuinely interesting. Sweet Seeds describe it as an intense, sweet, and fruity aroma faithful to the Mimosa genetics — think citric orange with a tropical sweetness — but with nutty and spicy notes underneath that give it real depth. When you grind the dried flower, those spicy undertones come forward. It's not a one-note strain by any stretch.

Effects-wise, Red Mimosa XL Auto sits in that sweet spot between mental stimulation and physical relaxation. The 60% indica genetics provide a calming body sensation, while the sativa side keeps things uplifting and creative. It's the kind of strain that works well in social settings — you're relaxed but not glued to the sofa, engaged but not racing. With up to 25% THC, it's not a lightweight, so experienced growers and consumers will appreciate the potency. If you're newer to higher-THC strains, pace yourself.

Red Mimosa XL Auto vs Other Sweet Seeds Autoflowers

The numbers speak for themselves. Red Mimosa XL Auto outperforms many autoflowers on yield, THC, and visual appeal. The 85% red-phenotype consistency is the real differentiator — most "coloured" strains are a gamble. This one isn't.

How to Grow Red Mimosa XL Auto Seeds

1. Germinate your Red Mimosa XL Auto seeds using the paper towel method or by placing them directly into a moist growing medium. Keep temperatures between 22–26 degrees Celsius for best results.
2. Transplant seedlings into their final container early — autoflowers don't like being repotted mid-grow. A 10–15 litre fabric pot works well for this strain's 60–130 cm height range.
3. Provide 18–20 hours of light per day throughout the entire lifecycle. Autoflowers don't need a light-cycle switch to trigger flowering, so keep the lights on and let the plant do its thing.
4. Feed lightly during the first two weeks, then increase nutrients as the plant enters its rapid growth phase. Red Mimosa XL Auto responds well to balanced feeding — don't overdo the nitrogen once flowers start forming.
5. Monitor humidity closely once buds start fattening up. Dense, compact flowers like these are more susceptible to mould if relative humidity climbs above 50% during late flowering.
6. Harvest around week 8 from seed. Check trichome colour with a jeweller's loupe — milky white with a few amber heads is the sweet spot for this strain's balanced effects.
7. Dry slowly in a dark room at 18–20 degrees Celsius and 55–60% humidity for 10–14 days, then cure in airtight jars for at least two weeks. The fruity, nutty terpene profile really develops during a proper cure.

Frequently Asked Questions

Last updated: April 2026