How To Tell If A Weed Seed Is Good?

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How to tell if a weed seed is good
January 28, 2022
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Every cultivator knows how critical seed quality can influence the growth outcome. If you get duds, they won’t sprout. Some bad seeds will germinate but won’t reach their potential yield. It’s essential to know how to tell if a weed seed is good if you want your cultivating efforts to pay off.

Join us as we explore the characteristics of seeds and how to differentiate the good ones from the bad. We’ll also show you how to select the right vendor and where to buy quality seeds, so you get value for money and a bountiful harvest. 

Let’s start with answering the question, what do good weed seeds look like?

High-quality cannabis seeds
High-quality cannabis seeds

How to tell if a weed seed is good

If you buy your seeds from reputable seed banks, you can be sure of getting quality seeds almost all the time. You’re more likely to get poor seeds from your local dealer. However, if you know how to tell if a marijuana seed is good, you can rule out bad ones immediately.

One way to judge the quality of cannabis seeds is by looking at their appearance. Be aware, though, that seeds from the same plant can have unique characteristics, just as with human siblings. Quality seeds will differ visually.  

What do cannabis seeds look like? Here’s a summary:

  • Color – ranges from green to brown
  • Shape – some are spherical while others are pointy
  • Size – there are small and large seeds

Now, let’s find out how to tell if a marijuana seed is good. Here are a few signs you can look for:

Aesthetics

The appearance of weed seeds can indicate their quality. Typically, the outer shells of superior cannabis seeds have dark colors, such as black, brown, or grey. Avoid seeds with lighter hues—white, pale green, and yellow are of poor quality.

High-quality cannabis seeds will not have damaged shells. There won’t be cracks that expose the inside of the seed. You’ll also notice a healthy waxy coating when you look at the seeds under bright light. 

While appearance offers a guide, it’s not a reliable indicator of a seed’s quality.

Shape and size

Healthy marijuana seeds may differ in size but look alike in terms of shape—they’re round or symmetrically shaped like a teardrop. Poor quality seeds usually have deformed or flat shells.

Seed size varies between cultivars. Larger ones are easier to grow because they have more stored energy and can potentially develop into healthy plants.

The weight of the seeds also matters when evaluating quality marijuana seeds. If you have two seeds and the smaller one weighs more than the larger seed, the former is of better quality. The bigger seed is lighter because it loses moisture and nutrients as it ages.

Firmness

Darker high-quality cannabis seeds are hard when you touch them. To feel how firm a seed’s shell is, without using excessive pressure, squeeze it with your thumb and index finger. If the seed doesn’t crack or bend, it’s viable.

Bad marijuana seeds are usually supple or soft. It’ll save you time and effort if you identify them and exclude them at the onset.

Healthy marijuana seeds
Healthy marijuana seeds

Age

Your cannabis seeds will degrade over time, so it’s important to choose freshly harvested ones up to four months old. If you preserve them well, healthy marijuana seeds can remain viable for some time.

It’s impossible to know a seed’s age unless it’s from your own plant. When buying seeds, you probably won’t know the age unless you buy them from a seed bank known for quality genetics. Check the data they provide.

Float test

Having inspected the seeds by sight and touch, a quick way to separate viable seeds from bad marijuana seeds is to do a float test. Fill a glass with distilled water and drop in the seeds you intend to germinate.

Check after an hour. Germinate the seeds that sink. Most growers dispose of the floaters as they probably won’t sprout. Even if they do, it’s unlikely you’ll get a healthy plant.

If you want to know how to tell if seeds are viable quickly, use the float test.

Experiment

Suppose you don’t have time to inspect every seed for viability, germinate all your seeds and watch what happens. You can put them in soil or use other germinating methods. The quality of the seedlings will tell you if you’ve used healthy marijuana seeds. 

The challenge here is wasting precious time using this method because you only see results when the germination process is over.

What does a healthy marijuana seed look like?

There are several ways to determine the viability of your seeds. One is by looking at the color of the seeds—healthy marijuana seeds are usually brown with varying shades from light to dark. You may also come across seeds with tiger stripes or turtle-shell patterns.

Seed colors may change due to genetics or environmental conditions, but they’re healthy if they remain in the range. It’s when they display a greenish shade that you have a reason for concern.

They’re not bad marijuana seeds per se, but green hues are a sign that the seeds did not have time to develop properly. There’s a high risk that these seeds will not germinate.

Another way to identify healthy marijuana seeds is to look at their size and weight. If they meet the color criterion, bigger seeds are usually healthier because they’re packed with nutrients and energy. However, you may have smaller seeds that are more viable if they weigh more than their larger counterparts.

Healthy marijuana seeds typically have a body shaped like a teardrop. If you notice seeds that are flat or distorted, they may have a genetic flaw. You’ll have issues germinating them, and if they do sprout, they’ll produce plants that are below par.

Another clue that’ll show that you have healthy marijuana seeds is the appearance of their shell. Good seeds will have shiny-looking shells as though there’s a layer of wax on them. Avoid seeds that look dull and have a matte finish.

How long are cannabis seeds viable?

Now that you know how to tell if marijuana seeds are healthy, the next question is how long are cannabis seeds viable?

The short answer is, it depends on how well you preserve them. Weed seeds get the signal to sprout when there’s heat and moisture. According to some cultivators, if you store your cannabis seeds in a dark and dry space, they can stay viable for as long as 5–10 years

Pro tip: place a cotton ball with your seeds to absorb excess moisture.

Fresh, healthy marijuana seeds will germinate quicker than older seeds. While you can keep seeds viable for years, some of them may not sprout. The longer you preserve them, the fewer seeds will be productive.

Choose healthy marijuana seeds that are less than a year old. Some established seed banks may indicate the age of the seeds. 

If they don’t, you can use the touch test that we mentioned earlier. Squeeze the seeds lightly with your thumb and index finger. If they’re firm, you’ve got young and healthy marijuana seeds. Older seeds may feel soft crack under pressure

Cannabis seeds in a glass jar
Cannabis seeds in a glass jar

Where is the best place to order cannabis seeds?

Where’s the best place to order marijuana seeds? If marijuana is legal in your state, you can get your seeds from dispensaries or buy them online from seed banks. The latter may be your only option if state laws prohibit the sale of cannabis.

When buying seeds from dispensaries, be sure to check that their staff knows how to tell if a marijuana seed is good. If you’re not happy with the answers you get, you’re better off looking elsewhere.

You should do the same when shopping online. To get high-quality cannabis seeds, we recommend that you only buy them from reputable seed banks such as Homegrown Cannabis Co

Stay away from small dealers that offer cheap seeds. There’s a high chance that you might end up with duds or low-grade seeds. It’s better to pay a bit more for quality marijuana seeds than endure the heartache of seeds that don’t sprout. 

Most recognized online cannabis seed providers offer seeds at competitive prices. We have regular promotions such as Buy-One-Get-One (BOGO), which are money-savers. You get two packets of seeds for one price.

Established seed banks like ours offer a seed replacement guarantee because we stand by the quality of our marijuana seeds. If you have seeds that don’t germinate, we’ll replace them once at no cost.

Another reason to buy from reliable vendors is that they usually have an extensive collection of high-quality cannabis seeds. You’re likely to find the strain you want without searching many websites. Your order and private details are also safe because they have secure payment systems.

3 tips on how to get high-quality cannabis seeds 

If you want healthy marijuana plants, you need to grow high-quality cannabis seeds. Sub-par seeds will only cause you to waste time and money because most won’t germinate. When they do, you end up with crops that don’t live up to their potential.

Getting high-quality cannabis seeds may not be as tricky as you think. Here are some tips to improve your odds of having seeds that’ll give you the crops and yield you want.

Choose the right supplier

Buying your seeds from an established seed bank is a reliable way to ensure you get only quality marijuana seeds. Most of these vendors pride themselves on providing customers with the best seeds. Homegrown offers replacement seeds if they don’t germinate.

You have a wide range of cannabis seeds to choose from. If you want sativa or indica cultivars, these seed banks will likely have the strain you want. Some may even have hard-to-find ones.

Get professional advice

When buying high-quality cannabis seeds, you want to know as much about them as possible. Reputable sellers have weed experts who prepare detailed information about the seeds and answer your questions.

These professionals will also advise you on the type of seeds that are suitable for your cultivation goals. You don’t need to figure out for yourself if you should grow regular, autoflower, or feminized seeds.

Create your own seeds

You can create high-quality cannabis seeds if you want to, but it’ll take some knowledge of the subject. You need to pollinate the flowers of your cannabis crop. To do so, you need the male part of your plant to send pollen to the female, which has flowers.

Except for plants grown from feminized seeds, most have both male and female parts. If you want to produce your own quality marijuana seeds, you should choose regular seeds.

Before you act on this knowledge, make sure you understand your state’s weed laws. Some states still prohibit the home cultivation of cannabis. If yours is one of them, don’t despair. Not being able to grow pot doesn’t mean that you can’t buy quality marijuana seeds.

U.S. Federal law allows citizens to purchase seeds as souvenirs. You can preserve them until it’s legal to cultivate in your location, as long as you don’t germinate them.

Cannabis seeds germinating
Cannabis seeds germinating

Get your high-quality cannabis seeds today

Once you know how to identify quality marijuana seeds by sight and feel, you’re able to rule out the bad ones before you germinate them. There’s no experimenting involved, which is a waste of precious time. 

If you’re unsure of how to inspect the seeds properly, use the float test. It’s simple to do and separates the seeds that’ll germinate from those that won’t. 

The no-brainer way of getting high-quality cannabis seeds is by buying them from reputable seed banks like us. You’re assured of premium-grade seeds 99% of the time. If not, we’ll replace the ones that don’t work.