To keep a cannabis mother plant healthy, grow her from a vigorous photoperiod seed, keep her in permanent vegetative growth on a long day light schedule, feed her gently and steadily, prune and train her so she stays compact and full of new shoots, repot or root prune when she gets root bound, and keep pests out with clean habits. A healthy mother can give you cuttings for many grows, each one a genetic copy of a plant you already know you like. Remember that autoflowers cannot be kept as mothers, and that a mother plant counts toward your state’s plant limit. Start with photoperiod genetics from our marijuana seeds collection. This guide is for adults 21 and older growing where home cultivation is legal.

What a mother plant is

A mother plant is a female cannabis plant kept in the vegetative stage so you can take cuttings, also called clones, from her. Each clone is a genetic copy of the mother, so it should grow and flower in a similar way when given similar care. Many home growers keep a mother so they can repeat a favorite plant without buying new seeds every time. Read our guide on how to make cannabis clones for the basics.

Why autoflowers cannot be mothers

Autoflowers start flowering on their own based on age, not light. You cannot hold them in vegetative growth, so they cannot be kept as mothers. Clones taken from an autoflower are the same age as the parent and will flower quickly as small plants. If you want a mother, start with photoperiod seeds. Learn the difference in autoflowering plants vs photoperiod plants.

Plant limits and clone rules

A mother plant is a living cannabis plant, so it counts toward your plant limit in states that allow home growing. Clones may count too, depending on your state. Some states count every rooted plant, while others treat immature plants differently. Check your state law before you keep a mother, and plan your garden around the total. See legal requirements for growing weed plants in your state.

Choosing your mother

The best mother is a plant you have already grown and liked. Many growers start several seeds of one strain, take a cutting from each before flowering, label everything, then flower the original plants. After harvest they keep the clone from the best plant as the new mother. Look for:

• Strong, vigorous growth and healthy roots
• Good branching with many nodes
• Resistance to pests and mold in your setup
• Flowers with the aroma, structure and resin you want
• No sign of hermaphrodite traits. See hermaphrodite cannabis

Light for a mother plant

To keep a photoperiod plant in vegetative growth, give her a long day. Most growers use 18 hours of light and 6 hours of dark, though some run longer days. Keep the schedule steady, because long breaks in the dark period or light leaks can push a mother toward flowering. A mother does not need a strong flowering light. A modest LED that keeps growth compact and healthy is enough. Read the cannabis light cycle for more.

Need	Typical approach for a mother
Light schedule	Long days, often 18 hours on and 6 off
Light intensity	Moderate, enough for compact, healthy growth
Feeding	Steady vegetative feeding, not too strong
Pot size	Large enough for roots, or root prune when needed
Pruning	Regular, to keep her compact and full of shoots
Space	A small separate tent or corner if you also flower

Feeding and watering

Mothers need steady nutrition for leafy growth. Use a vegetative feed at a gentle strength and increase slowly if leaves show signs of hunger. Overfeeding can burn leaf tips and stress the plant. For a broader look at nutrients by growth stage, see our feeding schedule for cannabis in soil. Keep pH in range so roots can take up nutrients. See understanding pH and how it affects cannabis plants. Water when the top of the medium dries, and avoid keeping the pot soaked, which can lead to root problems. Our guide on watering marijuana plants covers the basics.

Many clone takers ease off nitrogen slightly before taking cuttings, since very lush, soft cuttings can be slower to root. Watch your plant and adjust gradually.

Pruning and training

Regular pruning keeps a mother compact and pushes out more shoots for cuttings. Top her early, then keep pinching or cutting tips to encourage branching. Remove weak lower growth that gets little light. Training branches outward with soft ties opens the center and gives more even growth. See topping marijuana plants and low stress training for cannabis.

Managing roots over time

A mother lives much longer than a normal plant, so her roots will eventually fill the pot. Signs of a root bound mother include slow growth, frequent wilting and roots circling the pot. You have two options:

• Repot into a larger container to give roots more room
• Root prune by trimming the outer roots and replanting in fresh medium in the same pot, which keeps the plant a manageable size

Root pruning stresses the plant, so give her a few days of gentle care afterward.

Keeping pests and disease out

A mother can pass pests and diseases to every clone you take, so keeping her clean is critical. Inspect leaves often, including the undersides. Quarantine any new plants before they share a space with your mother. Keep the area clean and the air moving. Act quickly at the first sign of trouble. Our posts on preventing spider mites and fighting mildew can help.

Taking cuttings

Take cuttings from healthy, firm new growth with clean, sharp tools. Cut below a node, remove lower leaves, and place cuttings in a rooting medium with high humidity. Many growers use a rooting gel or powder. See rooting hormone for cannabis clones and making a cannabis clone box. After rooting, follow growing marijuana flowers from clones.

When to replace a mother

Mothers do not last forever. Over time some growers notice slower growth, weaker cuttings or more pest trouble. Many replace their mother every so often by keeping a fresh clone as the new mother. Others start over from seed to find a new favorite. Either way, keeping a backup clone protects your genetics if something goes wrong.

Strains that make great mothers

Vigorous photoperiod strains with good branching make strong mothers. Kind Seed Co options:

• White Widow for a classic, vigorous plant
• Northern Lights for compact, forgiving growth
• Critical Mass for a heavy flowering plant you may want to repeat
• Blueberry for a flavorful classic

Frequently asked questions

Can I keep an autoflower as a mother plant?

No. Autoflowers flower on their own based on age, so they cannot be held in vegetative growth. Use photoperiod plants for mothers.

What light schedule does a mother plant need?

Most growers use 18 hours of light and 6 hours of dark to keep a mother in vegetative growth. Keep the schedule steady and avoid light leaks.

Does a mother plant count toward my plant limit?

Yes. A mother is a living plant and counts toward your state’s plant limit. Clones may count too, depending on the state.

How long can I keep a mother plant?

Many growers keep a mother for a long time with good care, pruning and root management. Replace her if she slows down or develops problems.

How many clones can I take from one mother?

It depends on her size and health. A large, well pruned mother can give many cuttings, but take only what you need and what your plant limit allows.

Keep your favorite plant going

A healthy mother plant lets you grow a proven favorite again and again. Start from strong photoperiod genetics, keep her in long days, feed gently, prune often and keep her clean. Find your next mother in our marijuana seeds collection, or browse the full Kind Seed Co shop. Kind Seed Co sells only to adults 21 and older. Always follow the home grow laws where you live.