How to Grow Cement Shoe x Rainbow Regular
Cement Shoe x Rainbow Regular is an indica-dominant strain (65% indica), a cross of Cement Shoe and Rainbow Chips. It carries an 18 to 25% THC level, a sweet lemon flavor, and a euphoric, happy and relaxed effect. As a regular strain it produces both male and female plants, which makes it a favorite for breeders who want to preserve or cross this line. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It reaches a manageable 1.5 m, flowers in 8 to 10 weeks, and finishes outdoors in October with a huge yield. Its stable, unmodified genetics and sweet, lemon-forward profile are exactly what breeders look for in a regular strain.
Recommended Strains
Cement Shoe x Rainbow Regular
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THC | 18% - 25% (High) |
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Type | Regular |
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Yield | High |
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Phenotype | 65% Indica / 35% Sativa |
Cement Shoes
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THC | 20% - 24% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 40% Indica / 60% Sativa |
Cement Shoe x Rainbow Regular at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this sweet, lemon-forward indica, taken straight from the strain’s grow data.
| Seed type | Regular (photoperiod) |
|---|---|
| Genetics | Cement Shoe x Rainbow Chips |
| Phenotype | 65% Indica / 35% Sativa |
| THC | 18–25% (medium to high) |
| Flowering time | 8–10 weeks |
| Outdoor harvest | October |
| Height | up to 4.92 ft (1.5 m) |
| Yield indoor | 1.64–1.97 oz/ft² |
| Yield outdoor | 28.22–35.27 oz/plant |
| Climate | Temperate |
| Flavors | Lemon, sweet |
| Effects | Euphoric, happy, relaxed |
These are regular seeds, so they produce both males and females, the natural choice for breeding and preserving a line. Its 65% indica lean places it among the indica seeds, and its huge harvest earns it a spot with the high-yielding seeds. If you are still weighing options, the find your strain tool helps you match it against the rest of the catalog.
Promos & Deals
How to Germinate Cement Shoe x Rainbow Regular Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Cement Shoe x Rainbow Regular seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.
Once the taproot is a few millimeters long, move each seed root-down about 1 cm deep into a small pot of light, airy medium. Keep it lightly moist rather than soaked, hold humidity around 65 to 70%, and give soft light while the first true leaves open. Its vigorous, resinous genetics make for a strong, dependable seedling.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Keep seedlings warm and humid, but never waterlogged.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Cement Shoe x Rainbow Regular in the Vegetative Stage
As a photoperiod plant, you control the veg stage with the light schedule. Keep Cement Shoe x Rainbow Regular on 18 hours of light a day for as long as you want it to grow, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. It suits a temperate climate, so steady, moderate conditions work in its favor. As a 65% indica it grows into a sturdy, bushy plant, settling around 1.5 m.
This is the stage to shape the plant. Topping early and using low-stress training to spread the lower branches opens up the canopy, improves airflow, and encourages even, resinous colas. Give it room so light reaches the inner buds, and its heavy resin production rewards the effort.
Identifying the Sex of Your Plants
Because Cement Shoe x Rainbow Regular is a regular strain, each seed can grow into a male or a female, so part of the job is to identify the sex before flowering goes far. Around one to two weeks into 12/12, small pre-flowers appear where the branches meet the main stem. Females show a tiny teardrop-shaped calyx with a pair of white hairs, while males form small round pollen sacs on a short stalk.
If your goal is buds, remove the males early, before the sacs open, so they cannot pollinate the females and fill your flowers with seeds. If you are breeding, this is exactly where regular seeds earn their place: you keep a healthy male to collect pollen and preserve or cross this line, something feminized seeds cannot offer. Either way, check daily once pre-flowers show, as a single open male can pollinate a whole room.
Flowering and Buds of Cement Shoe x Rainbow Regular
Indoors, flip Cement Shoe x Rainbow Regular to a 12/12 light cycle to trigger flowering, which runs 8 to 10 weeks. Outdoors it ripens in October. As an indica-dominant plant it fills out with dense, resin-heavy colas, and outdoors it can reach a genuinely huge yield given room.
Through bloom, drop humidity to 40 to 45% and keep air moving so the thick buds stay dry and mold-free. The flowers build a sweet, zesty lemon aroma over a candy-like base, a bright, mouthwatering profile.
At 18 to 25% THC it reaches from the medium range into the high range, giving a euphoric, happy and relaxed effect, an upbeat, balanced feel that is genuinely strong at the top end.
Common Problems and Pro Tips
Cement Shoe x Rainbow Regular is a rewarding grow, but its dense buds, bright aroma and regular genetics point to a few things worth watching.
- Protect the dense buds: its resin-heavy indica colas can trap moisture, so keep humidity down and air moving in late flower to avoid mold.
- Give it room outdoors: it can reach a huge outdoor yield, so a big pot, strong sun and space let it show its full potential.
- Watch for males: as a regular strain it will throw males, so check pre-flowers daily and pull them early unless you are breeding.
Expert tip: its sweet-lemon profile rewards a clean, slow finish. Train for an even canopy, and dry and cure slowly so the zesty lemon and candy sweetness hold up.
Aroma, Flavor and Effects
The nose is sweet and zesty: a bright lemon lift up front over a candy-like, sugary base. It is a juicy, mouthwatering profile that leans fresh and sweet rather than earthy, a bright contrast to its heavy, resinous buds.
The flavor follows the nose, sweet lemon through the exhale. On the effect side it is euphoric, happy and relaxed, an upbeat, balanced feel grounded by its indica body. Because THC can run from a medium 18% up to 25%, pace yourself at the stronger end.
Dominant terpenes
Cement Shoe x Rainbow Regular carries a complex, lemon-forward terpene profile. Limonene drives the zesty lemon, Citral adds a sharp citrus lift, and Linalool a soft floral sweetness. Caryophyllene brings a warm, peppery edge, Nerolidol a woody softness, and Borneol an earthy, camphor-like note. A supporting cast of Cedrene, Pinene, Terpineol, Cadinene, Camphene, Eugenol, Farnesene, Fenchol, Humulene, Myrcene and Phytol fills in the edges of its lemon, sweet character.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. As a vigorous, high-yielding indica Cement Shoe x Rainbow Regular is a hearty feeder, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Cement Shoe x Rainbow Regular builds a heavy coat of resin, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the sweet lemon flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Cement Shoe x Rainbow Regular
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. Indoors this lands 8 to 10 weeks after the flip, and outdoors the plants are ready in October.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the lemon and sweet aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the zesty lemon and candy sweetness really come together, and it is the step most growers rush.
Frequently Asked Questions
Why are Cement Shoe x Rainbow Regular seeds not feminized?
Cement Shoe x Rainbow Regular is sold as a regular strain, so it produces both males and females. That is exactly what breeders want: a male lets you collect pollen to cross or preserve the line, which feminized seeds cannot do. Many growers also value the vigor and stable, unmodified genetics of a regular strain.
How do you identify the sex of Cement Shoe x Rainbow Regular plants?
About one to two weeks into 12/12, check where the branches meet the stem. Females show a small teardrop calyx with two white hairs, while males form round pollen sacs on a short stalk. If you are growing Cement Shoe x Rainbow Regular for buds, remove the males early so they cannot pollinate your females.
How long does Cement Shoe x Rainbow Regular take to flower?
Cement Shoe x Rainbow Regular flowers in 8 to 10 weeks once you switch it to a 12/12 light cycle indoors. Grown outdoors, it is ready in October. As an indica-dominant plant it fills out with dense, resin-heavy colas over that bloom window.
How much does Cement Shoe x Rainbow Regular yield?
Cement Shoe x Rainbow Regular is high-yielding, giving around 1.64 to 1.97 oz/ft² indoors. Outdoors, in the right conditions, a single plant can reach a massive 28.22 to 35.27 oz. Give it a big pot and strong sun outdoors to make the most of that potential.
How strong is Cement Shoe x Rainbow Regular?
Cement Shoe x Rainbow Regular has a THC level of 18 to 25%, reaching from the medium range into the high range. The effect is euphoric, happy and relaxed, an upbeat, balanced feel. Because it can get genuinely strong at the top end, start with a little and pace yourself.
What does Cement Shoe x Rainbow Regular taste like?
Cement Shoe x Rainbow Regular leads with a sweet, zesty lemon flavor over a candy-like base. It is bright and juicy rather than earthy, a fresh contrast to its heavy buds. Both the aroma and flavor deepen noticeably as the buds cure slowly after harvest, sharpening the lemon.
