10 Best Feminized Marijuana Seeds of December 2025

• Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs, great for Rooting Cuttings clone plants, germination start seeds and more. Encourages Faster Initial Rooting & Its Firmness Is Guaranteed
• Provides 20% Air Space When Saturated - Absorbs nutrient solution while retaining plenty of oxygen for rapid root growth!
• EASY TO TRANSPLANT - Much easier than starting in soil! Predrilled planting holes make seeding and plant propagation a breeze. Great for hobby and commecial growers
• 1.5x1.5x1.5 Inches - great-sized to fit a standard flat growing tray.
• WIDE APPLICATION -These rockwool starter plugs are widely used in hydroponic, seed starting, cuttings, plant propagation and so on. Much easier than starting in soil! They are great for gardening hobby and commercial growers.

NREOY

• Big Bloom Liquid Plant Food is formulated for use on all plants and can be used every time you water. OMRI Listed and Registered CDFA Organic Input Material.
• Grow Big is a liquid concentrate fertilizer that supports lush vegetative growth.
• Tiger Bloom is a phosphorus fertilizer that contains nitrogen to support vigorous growth. Tiger Bloom is designed to encourage abundant fruit, flower and multiple bud development.
• Bush Doctor Cal-Mag is a calcium and magnesium supplement that helps strengthen cell walls and aid in fruit development.
• Twin Canaries Chart included with every order

Twin Canaries Liquid Volume Conversion Chart

• 🌱BEST WAY TO START – Find yourself growing an indoor garden in no time with this easy-to-use, no mess kit.
• 🌱REUSABLE AND STURDY – Includes 3 thick indoor greenhouse trays 10" x 4" with domes. Reuse for many seasons!
• 🌱EASY TO TRANSPLANT – Get 30 fiber soil pods 36mm to help grow stronger roots. (Seeds not included)
• 🌱COMPLETE AND CLEAR GUIDE – Comes with detailed steps in using this seedling kit and growing your plants healthy.
• 🌱WATCH YOUR PLANTS GROW – Just the right size for your windowsill - for easy watering and monitoring!

Window Garden

• Pre-made Silver Thiosulfate Solution

The Need For Seeds

• WHY USE BIOPHARM’S FEM MAGIC: By using Biopharm’s Fem Magic, you have a chance to produce female seeds with 99% accuracy of your favorite strain. This is made in an American Lab with American customer service. We want you to be completely satisfied with your purchase and we are happy to resolve any issues you may have.
• HOW TO APPLY: Choose a plant that has not started flowering and is at least 2 weeks in the vegetative cycle. Spray one entire plant (not foliage), 1 time a day for 14 days. Before the pollen sacs open, put a collection device under the feminized plant to catch the falling pollen. Use this pollen to dust another plant in flowering mode. (Alternate method: Put a fan near the feminized plant and place a non-feminized plant nearby so the pollen can transfer to the plant.)
• PRESERVATION: Biopharm’s Fem Magic allows you to preserve your favorite strain of the sacred plant. This allows you to save tons of money by not buying female seeds from the big growers.
• FEMINIZED SEEDS 99%: Biopharm’s Fem Magic is the most reliable method for producing feminized seeds of dioecious plants. One kit is all you need to feminize an entire plant to produce female pollen. When the pollen from your feminized plant is transferred to the flowers of your non-feminized plant, it will produce female seeds with 99% accuracy. Take the guess work out of it!

Biopharm

• Big Bloom, Grow Big, and Tiger Bloom -- The Right Juice for the Right Use!
• Start with Grow Big for abundant green growth
• Switch to Tiger Bloom at the first sign of bud set or flowering
• Use Big Bloom throughout all growing cycles to heal root systems and increase nutrient cycling
• Ideal for mature, late-season flowers and fruit

Twin Canaries Liquid Volume Conversion Chart

• LOWER OPERATION COST & HIGHER QUALITY YIELDS：VIPARSPECTRA XS1000 LED grow light adopts the latest high-quality LEDs technology-Samsung LM301B diodes, high energy efficiency LEDs increase yield of crops and save operation cost, generates more usable lighting per watt and provides better light canopy penetration.
• OPTIMAL FULL SPECTRUM & FLEXIBLE DIMMIER: Consists of 3000K warm white, 5000K white, 660nm deep red, and 730nm IR light, which providing your plants with excellent full spectrum led grow lights. The red and IR light are particularly useful during bloom, which can speed up bloom time and enhance high yields to obtain the ideal harvest. An added dimmer knob is featured to manipulate the light intensity at liberty, provides desired needs for plants in all stages from veg to bloom.
• SILENT OPERATION & SOLID CONSTRUCTION: No fans zero noise. Large areas of solid aluminum heat sinks help you to achieve the ideal cooling system. Adopts high safety performance MEAN WELL driver to achieve high PAR output, longer lifespan to speed up plant's grow processes and boost yields while saving you on your energy bill.
• AMPLE COVERAGE & LESS ENERGY CONSUMPTION: Comparable to traditional 250W HPS/MH while consuming only 120W, which helps to get 50% higher yield harvest and save costs. Perfect for 2.5’x2.5’ vegetative coverage at 18”and 2’x2’flowering coverage at 14”. Remember to properly adjust the height and brightness accordingly to your plants desired level for optimal growth.
• TRULY BEST BACK FOR THE BUCK: We provide 36-Month US Local warranty and 30-day money-back guarantee. Professional guidance, friendly customer service and US local after-sales service provides you with a pleasant shopping experience and helps your plants grow better. Make sure you purchase authentic VIPARSPECTRA grow lights. If you have any questions, please contact us at any time.

VIPARSPECTRA

• EASILY MAKE 100% FEMALE SEEDS: The Cannabinology STS Spray Kit is easier to use and more effective than Colloidal silver and other reversal methods. This kit contains everything you need to sex reverse female plants and produce feminized seeds at home or in a commercial setting. This proprietary Silver Thiosulfate formula is proven to provide ease of use, accuracy, and repeatability to breeders across the country and around the world. Start your breeding journey today!
• SAFE & SCIENTIFIC: Cannabinology STS Spray is safe, non-toxic, and non-allergenic. However, a plant that is treated with STS should not be consumed (it will be covered in pollen sacs anyway) and it can stain fabrics. It’s always a good idea cover up and wear gloves when doing scientific work!
• HOW IT WORKS: The Cannabinology STS Spray Kit contains a proprietary aqueous formula of Silver Thiosulfate (STS). When applied to plants at, Silver Thiosulfate (STS) blocks the action of ethylene, the “female” hormone in plants. Blocking ethylene forces a female plant to produce male-type flowers, pollen sacks, and pollen. Since this pollen was made by a female, the pollen can be used to pollinate a non-treated female plant (or branch) creating feminized seeds which will be 100% female.
• HOW TO USE: Whether you’re just starting your breeding journey or are a seasoned breeder Cannabinology STS Spray Kits make it easy to make feminized seeds. Add water then a small amount of soap to the STS Spray bottle. Apply STS Spray to a female plant starting on day 1 of flower; repeat every 5 days until day 20 – 30. Pollinate a non-treated female plant. Grow the female plant until seeds are mature. For important tips on using Cannabinology STS Kits, see the included instructions.
• BENEFITS: Cannabinology STS Spray Kits provide new and seasoned breeders the easiest method of reversing female plants and producing feminized seeds. You can easily save your favorite phenotypes, produce new feminized crosses, and even flush out rare genotypic or phenotypic traits.

Cannabinology

• 🌱 100% FEMINIZED SEEDS: Tiresias Mist is the most reliable, safe and effective alternative for producing feminized seeds. One bottle is all it takes to provide enough solution to one branch that will produce female pollen. Transfer that pollen to the flowers of a dioecious plant and it will produce 100% feminized seeds. No more guessing!
• 🌱SAFE + FUN: Tiresias Mist is made of natural minerals and is non-toxic, non-allergenic and will not cause harm to humans, plants or pets. However, the stem being treated should not be consumed (it will be covered with pollen sacs). Most importantly, have fun, get crazy and be excited to start your own experiments. You now have the ability and the freedom to produce your own female seeds and save your favorite strains!
• 🌱 HOW IT WORKS: Whether you’re an amateur or a pro grower, Tiresias Mist makes it simple for anyone to create their own feminized seeds. A 1oz bottle will treat one branch of a plant to produce feminized seeds on the same plant, or to produce genetically female crosses with other plants. Treating one branch enables that one branch to create male characteristics (pollen sacs) through which the pollen can be used to pollinate the flowers of the rest of the plant and produce feminized seeds.
• 🌱 HOW TO USE: Choose a plant that has not started flowering and is at least 2 weeks in the vegetative cycle (about 5” height). Spray one entire branch (not foliage), 3-4 times a day for 14-21 days. Before the pollen sacs open, cut off the branch, place it in a glass of water and wait for development to finish. At the same time, continue growing the plant until female flowers are showing. When ready, carefully dust your female flowers with pollen. Continue growing until feminized seeds mature.
• 🌱 BEST BENEFITS: By using Tiresias Mist, you not only gain all female seeds, but you also no longer have to wait weeks for deliveries and it allows you to create your own strain. Additionally, a tap root from a seed will produce higher yields and you can store seeds for future use and crop timing. It’s easier to transport seeds as opposed to seedlings or clones.

Tiresias Mist