Hyperion F1 Grow Report: My Week-by-Week Grow Diary

Key Takeaways

• Hyperion F1 completed its full grow cycle in 78 days from sprouting.
• The tallest plant reached 110 cm, showing strong vertical growth and vigorous branching.
• Three plants produced 168 g of dry flowers in total, averaging 56 g per plant.
• Resin production was excellent, with sticky, highly aromatic buds covered in trichomes.
• The main issue was a CalMag deficiency in the tallest plant, while bud density remained looser than expected.

Hyperion F1 appealed to me because she is one of Royal Queen Seeds’ tallest autoflowering F1 hybrids. Her genetic background combines inbred lines descending from Amnesia, Lemon, and Sin Tra Bajo Automatic, giving her a reputation for rapid growth, strong branching, heavy resin production, and substantial yields.

I had already run a few F1 hybrids by this point, so what I wanted to know was whether Hyperion would out-muscle them. On height and vigour, she did.

I grew three plants indoors and tracked Hyperion F1 week by week in my Grow Diaries journal, so this report comes straight from those notes and photos. All three plants completed the cycle in 78 days from sprouting. The tallest specimen reached 110 cm, while the final dry yield came to 168 g across all three plants, averaging 56 g per plant.

The grow was straightforward overall. The main issue appeared during flowering, when the tallest plant developed a clear CalMag deficiency that caused extensive yellowing and leaf loss. The flowers also remained looser and puffier than I expected. Even so, they finished dense with resin, sticky, and pungent, and I was pleased with the final quality.

Hyperion F1 Grow Report: Equipment List

• Grow tent: Secret Jardin DS120W, 120 x 60 x 178 cm
• Lighting: MIGRO 200+
• Ventilation: TT Silent-M 100
• Filter: Prima Klima PK 100/125
• Air circulation: Two oscillating Koala fans
• Humidifier: Beurer LB 45
• Growing medium: BioBizz Light-Mix
• Pots: 11 L air pots
• Seeds: Royal Queen Seeds Hyperion F1
• Nutrition: RQS Organic Nutrition

I prepared three 11 L air pots using BioBizz Light-Mix. Into the substrate, I mixed 50 g of Easy Boost Organic Nutrition pellets, 10 g of seaweed, and 5 g of mycorrhiza before thoroughly moistening the soil. The seeds went directly into their final pots, all three sprouted successfully, and I lightly watered them during the first few days as the surface of the growing medium began to dry.

For most of the grow, I adjusted the irrigation water to pH 6.0. During vegetative growth I kept the lights running continuously on a 24/0 schedule, then switched to 18 hours of light and 6 hours of darkness once flowering began. Watering started at approximately 0.5–1 L per plant and gradually increased as the plants became larger and their root systems developed.

Hyperion F1

Hyperion F1

	Amnesia x Lemon x Sin Tra Bajo Automatic
	XXL
	60 - 90 cm
	45 - 55 days
	Very high

	Laughter, Motivating , Physically Relaxing, Sleepy
	80 - 85 days after sprouting

Buy Hyperion F1

Hyperion F1 Grow Diaries: Vegetative Stage (Weeks 1–3)

Week 1: Fast Early Vegetative Growth

I started counting the vegetative stage once the plants had developed four true leaves. At that point Hyperion F1 #1 measured 6.5 cm, #2 stood at 4.5 cm, and #3 measured 4 cm.

All three settled into the substrate quickly. They began forming branches early and developed sturdy stems with healthy green foliage.

Water demand was still low, so I watered approximately every four days. During the main watering of the week I mixed 3 L, took it to pH 6.0, and split it between the three pots. No liquid supplements went in at this stage, because the substrate already contained Easy Boost, seaweed, and mycorrhiza.

Seven days in, #1 had reached 17 cm, #2 measured 13 cm, and #3 stood at 10 cm. The early development was already fast, and all three looked healthy and well established.

Week 2: Rapid Growth and Increasing Height Differences

The second week brought another strong burst of vegetative growth. The plants produced plenty of new leaves, their branches became noticeably more developed, and the foliage stayed dark green and healthy throughout.

Hyperion F1 #1 started to separate from the other two in terms of height. Although all three shared the same genetics, the tallest specimen clearly expressed a more elongated structure, while #2 and #3 remained more similar to each other.

Water demand increased slightly. I watered twice, running roughly 5 L across all three plants each time and taking it to pH 6.0 first.

Week 2 closed with #1 at 35 cm, #2 at 25 cm, and #3 at 20 cm. They were still young, but already vigorous and well branched.

Week 3: Pre-Flowers and the End of Vegetation

Week 3 was the final full week of vegetative growth. All three continued stretching quickly, gaining roughly 20–25 cm over the course of the week, and the branches thickened and produced a large amount of fresh foliage.

The first pre-flowers began to appear, making it clear that the transition into bloom was approaching. The lower sections had become quite dense by now, so I planned to clean them up during the following week to improve airflow.

Watering moved to every three to four days, at roughly 2 L per plant. The first flowering supplement also went in this week: I mixed 6 L for the three plants with Bigger Flowers at 0.4 ml/L and two drops of SuperVit, then took the pH to 6.0. The lights stayed on 24 hours per day throughout the vegetative stage.

#1 finished the week at 51 cm, with #2 at 38 cm and #3 at 31 cm.

Hyperion F1 Grow Guide: Flowering Stage (Weeks 4–10)

Week 4: The First Week of Flowering

I counted week 4 as the first full week of flowering and changed the light schedule to 18/6. Hyperion F1 #1 was now noticeably taller and more stretched than the other two, with greater internodal spacing and a much more pronounced distance between branches.

All three kept gaining height, flowers began forming across the branches, and I could detect the first faint aroma. Before watering I cleaned up the lower sections, and removing some of the lower leaves and growth helped improve airflow and reduced congestion beneath the canopy.

Watering increased to approximately 2.5 L per plant every three to four days. The main feed of the week was 8 L with Bigger Flowers at 0.4 ml/L and two drops of SuperVit, taken to pH 6.0. A few days later I watered again without flowering supplements.

The heights at the end of week 4 told the story: #1 at 83 cm, #2 at 59 cm, and #3 at 51 cm.

Week 5: The Tent Starts to Fill Up

By week 5 the plants had become large enough to make the grow tent feel like a small jungle. Hyperion F1 #1 passed the 1 m mark while the other two remained noticeably shorter, and with heavy branching on all three the canopy was getting crowded.

Flower development continued, and the first visible trichomes started to appear. I expanded the feeding programme by adding Thicker Flowers alongside Bigger Flowers and SuperVit.

One irrigation went in at 7 L with Bigger Flowers at 1 ml/L, Thicker Flowers at 0.4 ml/L, and two drops of SuperVit, all taken to pH 6.0. At the next watering I used only SuperVit and pH-adjusted water.

#1 signed off the week at 104 cm, #2 at 81 cm, and #3 at 67 cm. The tallest was beginning to approach the limits of the available vertical space, but she remained healthy and structurally strong.

Week 6: Final Stretch and Heavy Resin Production

During the third week of flowering, vertical growth began to slow. Hyperion F1 #1 reached 110 cm, while #2 measured 90 cm and #3 stood at 78 cm, and at that point I did not expect much more stretch out of any of them.

Trichome production increased considerably. The flowers and surrounding sugar leaves were already developing a visible resin coating. The flowers themselves were progressing, although they were not filling out as densely as I expected, and since it was still relatively early in flowering I decided to give them more time.

Watering stayed at every three to four days. The feed that week was 7 L carrying Bigger Flowers at 1 ml/L, Thicker Flowers at 0.4 ml/L, and two drops of SuperVit, adjusted to pH 6.0. At the next watering I used 5 L with SuperVit alone.

The tallest plant held at 110 cm, and the stretch was effectively complete.

Week 7: A CalMag Deficiency Appears

Week 7 brought the main difficulty of the grow. Hyperion F1 #1, the tallest specimen, began developing extensive yellowing across the leaves, and I identified the likely cause as a CalMag deficiency.

Looking back, I should have reacted as soon as I noticed the first symptoms. I had not added CalMag preventatively, and the deficiency progressed further than I would have liked. Because the plant was also very tall, I moved her into the middle of the grow space to improve her position beneath the lights.

The flowers continued developing, but their structure remained looser than expected. At this stage I would normally have expected them to be firmer and more compact.

Watering settled at roughly every four days. I also introduced Sweeter Flowers, completing the three-part Bio Flowering Booster programme with Bigger Flowers, Thicker Flowers, and Sweeter Flowers, then gave only pH-adjusted water at the next irrigation.

The plants had stopped gaining height by the end of the week.

Week 8: Sticky Flowers and the Final Feed

By week 8 the plants had completed five weeks of flowering. The yellowing on Hyperion F1 #1 had become much more pronounced, but the flowers themselves continued producing large amounts of resin.

The buds were tacky enough to stick to my fingers, and the aroma had become intense. Their structure was still puffier than I expected, and they were not developing the hard, compact form I had hoped for, but the trichome coverage was excellent.

This was also the point where I stopped using supplements, and from here until harvest I supplied only water. The first watering of the week was 7 L at pH 6.0, split evenly across the three pots, followed by 6 L at the next irrigation.

By the close of the week, everything was tipping into the final stage of ripening.

Week 9: Monitoring Trichomes and Maturity

By week 9 harvest was getting close. I checked the trichomes every day, but not all of them had turned milky yet, so I decided to wait rather than harvest too early.

The foliage began taking on autumn colours as the plants approached the end of their life cycle. Hyperion F1 #1 showed the strongest signs of decline: the CalMag deficiency had affected most of the plant, and many of the damaged leaves had already fallen away.

I continued watering every three to four days using plain water. One irrigation came to 8 L at pH 6.0, spread across the three plants, and the next came to 6 L.

The flowers were close, but I gave them a few more days to mature.

Week 10: Final Ripening and Harvest

The final stage lasted another five days. Their last drink was roughly 8 L divided evenly between all three.

By day 68 from the beginning of the vegetative stage, the flowers were ready for harvest. That corresponded to 78 days from sprouting. Before cutting the plants I photographed them one final time.

The flowers were caked in trichomes and sticky enough to gum up the scissors, and the aroma had become very strong. The buds remained somewhat loose and puffy rather than hard and compact, and the remaining leaves had developed autumn colours, with some purple-pink tones appearing around the upper sections of the main stems.

I removed the larger leaves, cut the plants at the base, and hung them upside down inside the grow tent. They dried for 15 days before I cured the flowers.

Hyperion F1 Grow Journal: Harvest Results

After drying, the three Hyperion F1 plants produced 168 g of flowers in total, an average of 56 g per plant. They were highly resinous, sticky, and strongly aromatic, with trichomes covering the buds and surrounding sugar leaves in abundance.

The main disappointment was flower density. Instead of consistently hard and compact buds, I ended up with a mixture of smaller, puffier flowers and several larger buds at the ends of the taller branches.

I suspect some form of stress may have prevented the plants from showing their full potential, although I cannot say for certain what caused it. The CalMag deficiency on the tallest plant was certainly one factor that may have influenced the final result.

Even so, I was satisfied with the 168 g yield. The looser flower structure did not prevent the buds from producing plenty of resin or delivering good smoke quality.

Genetic Attributes of Hyperion F1

Hyperion F1 is an autoflowering F1 hybrid developed from highly pure inbred lines descending from Amnesia, Lemon, and Sin Tra Bajo Automatic. These genetics contribute to rapid development, strong branching, substantial vertical growth, and high resin production.

She is also one of the tallest F1 hybrids in the Royal Queen Seeds catalogue, which makes her well suited to growers who have enough vertical space and want to prioritise plant size and yield.

The official Hyperion F1 specs put flowering at 45–55 days, with harvest typically expected 80–85 days after sprouting. My plants finished slightly ahead of that estimate at 78 days from sprouting. Hyperion F1 produces very high levels of THC and is classified as an XXL-yielding variety.

Growth Characteristics of Hyperion F1

Hyperion F1 lived up to her reputation as a tall and vigorous autoflowering F1 hybrid. The plants developed rapidly from the beginning and produced plenty of strong side branches and flowering sites.

The Hyperion F1 week-by-week height data shows how quickly the tallest specimen moved. She increased from 6.5 cm at the beginning of vegetation to 17 cm after week 1, 35 cm after week 2, 51 cm after week 3, 83 cm after week 4, 104 cm after week 5, and finally 110 cm during week 6. The other two remained shorter, finishing their stretch at approximately 90 cm and 78 cm.

The official Hyperion F1 profile lists an outdoor height of 60–90 cm (2–3 ft). My tallest plant exceeded that range, which shows how much individual plants and growing conditions can influence final size.

The plants also developed dense lower growth, and light defoliation during early flowering helped improve airflow through the canopy. Overall she was easy to grow: aside from the CalMag deficiency on one specimen, I did not encounter significant problems with pests, disease, mould, or environmental stress.

Effects, Aroma, and Flavour of Hyperion F1

The official Hyperion F1 flavour profile combines earthy, herbal, pepper, and pine notes. My harvested flowers leaned most strongly towards herbs, citrus, and pine, and during late flowering I also noticed a pronounced sweetness in the aroma. The smell became especially intense during the final weeks, when resin production was at its highest.

Hyperion F1’s major terpenes are farnesene, myrcene, ocimene, and terpinolene. Together, these compounds contribute earthy, herbal, spicy, fresh, and sweet characteristics. In my grow, the combination of herbs, citrus, pine, and sweetness was the most noticeable.

Hyperion F1 produces very high levels of THC, so I expected a strong effect. For me the experience was relaxing without becoming overwhelmingly sedating, and there was a clear creative quality to it. I could still stay productive and focused on what I was doing, which made the flowers suitable for use during the day.

The official effect profile describes Hyperion F1 as motivating, physically relaxing, laughter-inducing, and potentially sleepy. My own experience leaned most strongly towards relaxation and creativity, and dry mouth was the main unwanted effect I noticed. Cannabis affects everyone differently, and the experience can vary depending on tolerance, amount consumed, setting, and method of consumption.

I do not think these plants showed everything Hyperion F1 is capable of, and that is exactly why I would like to grow her again. With better control of the CalMag issue and closer attention to potential sources of stress, I would be interested to see whether I could achieve denser flowers and an even stronger final result.