STRNG Seeds – THCA Runtz Auto

THCA Runtz Auto captures the exotic flavor and visual appeal of the original while delivering a fast, discreet, and compliant autoflowering experience. It’s perfect for growers seeking quality and speed without compromise.

Expect a strong candy aroma with notes of tropical fruit, sweet cream, and citrus. As it ripens, a hint of gas develops underneath the fruit-forward profile.

All orders are shipped in plain, unmarked packaging to ensure a discreet delivery.

This autoflower stays compact, usually 60–90 cm tall. It’s ideal for grow tents, balconies, or low-profile indoor setups where space is limited.

Expect a full cycle of 9 to 10 weeks from germination. It starts flowering automatically around week 3 without any light cycle changes.

Yes, it performs strongly in coco and hydro setups like DWC, provided pH and EC are carefully managed. Growth tends to be faster and yields slightly higher.

Yes, it’s user-friendly. It doesn’t require advanced techniques, tolerates minor mistakes, and delivers top-shelf results with basic care and good lighting.

Buds are round, dense, and heavily frosted. You’ll see bright green tones with lavender streaks, orange pistils, and a thick coat of glistening resin.

It’s great for growers who want a fast, flavor-packed cultivar with big visual appeal—especially those operating under THCA-focused compliance or seeking rapid turnover.

Definitely. Its short size, quick lifecycle, and manageable early odor make it ideal for discreet indoor or outdoor setups.

It means the plant is autoflowering and bred to be compliant with THCA-focused legal standards—producing flower with structural and resin traits aligned to those markets.

An 18/6 light cycle (18 hours light, 6 hours dark) works well from start to finish. Some growers run 20/4 for slightly faster growth, if temperatures allow.

Yes—gentle low-stress training (LST) early in the grow helps spread the canopy. Avoid topping unless done in the first 10–12 days due to limited recovery time.

Always start in your final container—typically 3 to 5 gallons. Autoflowers don’t respond well to transplant shock and need consistent root development.

Yes, especially in warm, sunny conditions. Its short cycle makes it perfect for quick outdoor runs or multiple harvests per season.

Use a light, well-aerated soil mix with good drainage. Organic-rich substrates enhance terpene expression and promote healthy, balanced growth.

Water when the top inch of soil feels dry. Autoflowers do best with consistent moisture—avoid extremes like overwatering or drying out.

Use a light vegetative feed early, then switch to bloom nutrients rich in phosphorus and potassium by week 4. Supplement with cal-mag if using LED lights or coco.

Yes, it thrives in organic systems. Living soil, dry amendments, and compost teas can enhance flavor and improve post-harvest smoothness.

Maintain 22–26°C with RH around 55% in veg. In flower, drop humidity to 40–45% to prevent mold and promote resin development. Good airflow is key.