Avoid airy and loose marijuana buds

When it comes to growing marijuana plants, the last thing you are going to want is light, loose, and airy buds. Dense, sticky buds dripping with THC are optimum for any marijuana grower. Generally, this type of inferior bud comes from poor lighting, hot temperatures, or lack of nutrients.

Signs of airy buds

You will easily recognize this type of bud because it appears airy and flaccid. These buds don’t mature properly, and they don’t get dense or firm up as much as normal buds. Consequently, they have less THC. If you have been growing indoors, this type of bud may be due to the plant’s proximity to the light. In outdoor grow areas it can be caused by high temperatures, especially during the flowering phase. This most often occurs in marijuana strains that flower early.

Marijuana airy buds
Signs of airy marijuana buds

Otherwise, airy buds could come from poor lighting. If your plants haven’t been receiving much light during the flowering season, their buds will likely be light and less potent. The same goes for if your plants haven’t been getting enough potassium.

How to fix airy buds

Basically the only way to “fix” this problem is to prevent it in the first place. There are ten essential ways to ensure that your buds don’t grow airy plants, so read carefully.

Begin with a good strain

The importance of genetics can’t be stressed enough. The strain you choose will determine the appearance, smell, and taste of your marijuana plants’ buds. Strains can vary greatly and can make or break your success as a marijuana grower. If you start out with so-so genetics, no amount of work in the world is going to get you the result you so desire.

It is also important to choose the right strain that works best for you. There isn’t one “best” strain that everyone should choose – it all depends on your lifestyle, climate, and growing setup. Make sure to do the research to determine what kind of genetics will get you the best end result possible. Indica-dominant marijuana strains generally end up with denser buds, but this is not a 100% success rate.

Good quality cannabis strains
Good quality cannabis strains

Sativa-leaning strains end up with buds that are not so dense, but lots of growers choose them anyway because of their “cerebral daytime” high. Additionally, Sativa-leaning strains often have a high yield, meaning each bud could be extremely long rather than the typical “nugget” of indica-dominant marijuana strains.

Whatever marijuana strain you choose to grow, get good results from seed to bud by buying high-quality seeds from my seed bank.

Strains can vary greatly according to the breeder. If you bought the same strain from three different breeders, you would most likely end up with three very different plants. You, therefore, need to be especially careful to choose a breeder that you are familiar with or have read recommendations for.

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When researching different strains, you can use a website such as SeedFinder. It will explain the complete background of each strain and go into detail about breeders. It even includes reviews written by growers, as well as pictures to help you decide which strain looks best to you.

Some strains have no feedback or only feedback in foreign languages. If this is the case, don’t be afraid to use Google Translate. Another way to discover which strain is best is by creating a shortlist of your favorite possibilities as soon as you can.

Try some sort of large seed bank online, which will give you data on a wide variety of strains. You can even put in the specific qualities of the strain that you prefer and will match you up with the strains that might work best for you. You can then take that shortlist of strains and Google it.

Healthy growing marijuana plant
Healthy growing marijuana plant

Don’t forget to check out the Google images, since those will also give you a good idea of what to expect with that strain. YouTube is another medium that marijuana growers use to educate others, so see if there is an informational video from someone who has grown this specific strain before.

Whatever you choose, don’t decide solely on the appearance of the plant. The end result and the effects of the weed are far more important than whether the plants were pretty. Even if buds aren’t incredibly dense, smoking them could have the perfect effect in your opinion.

Amount of light

Where you position your plants and lights depends on what kind of lights you are using. If you’re using Fluorescents or CFLs, for example, you need to ensure that they are as close as you can put them to your plants, without burning them. They should be as close as within a few inches of your plants – just make sure the heat isn’t too great.

Both quantity and type of lighting are very important, so be sure not to focus your efforts on just one and not the other. New growers often struggle with finding a happy medium in their lighting setup, so they either create a setup that is far too strong or far too weak.

Growing marijuana using LED lights
Growing cannabis using LED lights

Even if they choose the correct lights, they often place the lights the incorrect distance away from the plants, making them either too far from or too close to their marijuana plants. This can lead to undesirable effects, such as airy buds.

If you use LED grow lights, on the other hand, you need to check with the manufacturer to figure out the perfect distance. This is simply because every LED light model has its own recommendations, so there is no ideal way for the positioning of all LED lights.

You also need to have a decent understanding of lights and the way the color spectrum works. Yellow, orange, or red light, for example, generally helps your plants have the densest buds possible. This is because red-based light is similar to the sunlight in the fall season. As long as the light is bright, however, the buds will be relatively dense, no matter which colors are predominating.

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The most popular type of light utilized during the marijuana plant’s flowering stage is by far HPS grow lights. These use energy extremely efficiently and still provide your plants with intense light. They provide the correct color spectrum and they don’t cost too much, so they are an easy one to go with – especially for beginner growers.

Outdoor growers, although they can’t affect the sunlight, can make sure that their plants are receiving eight hours or more of light per day, but not so much (especially on hot days) that their plants start to burn or dehydrate. You can avoid this with a screen or cover of some sort on especially hot days.

No matter what kind of light setup you are using, there are a few basic points you need to take care to follow. First, utilize reflective materials to point all the light at your plants and not waste any. Make sure the lights are positioned closest to the top of your marijuana plants’ canopy, while still not increasing the heat around the plants by too much.

You should make sure that every inch of your plant (minus the roots) is exposed to direct, bright light. This is especially important when it comes to buds. Any buds that are shaded from the lights or the sun are not going to be dense and large.


Without the temperature being at the right level, your buds are never going to reach their maximum potential. If you are growing indoors, it is going to be far easier to adjust the temperature accordingly. Genetics is also going to affect this, so hopefully, you have chosen optimal strains for your specific climate.

In general, you should keep the temperature between 65 and 80 degrees Fahrenheit during your plants’ flowering phase. Any higher than this and your plants may experience heat burn, airy buds, fox-tailing, and reductions of bud potency and aroma.

Indica strains are generally less capable of dealing with heat, whereas sativa strains do pretty well with it. If you’re from a colder climate, however, Indica strains can be very useful because they handle the cold quite well.

measuring temperature for marijuana buds
Measuring temperature for cannabis buds

These days, almost all strains are some sort of combination between an Indica and a Sativa. So,  make sure you do your homework for whatever particular strains you are looking at in order to see how it fares in various conditions.

One way of keeping the temperature of your plants down is by using a micro-sprayer system. This system will allow plants to remain cool even while they are sitting under hot sunlight all day long. The sprayers work via strong pumps or through strong water pressure, therefore creating the fine mist.

Each droplet within this mist is less than five microns, meaning they will evaporate with extremely high efficiency and, therefore, cool the air surrounding your plants significantly. They are used both in outdoor growing areas as well as greenhouses. They have a simple installation process while not wasting water or using much water at all.

BTW you can avoid airy and loose marijuana buds by simply following our grow guide. Download FREE marijuana grow bible now.


Nutrients are a crucial part of getting your plants to produce huge, dense, heavy buds. They were important when your plant was a seedling and was in its vegetative phase of growth, and they are still important during the flowering phase.

PH level also comes into play with the absorption of nutrients, so be sure that the pH level of the soil near your plants’ roots is always balanced properly.

‘Shortly before the flowering stage, growers change to a “super bloom” fertilizer formula with less nitrogen and more potassium and phosphorus.’

Jorge Cervantes

When your plants are budding, they need some nitrogen, a large quantity of potassium, and plenty of phosphorous. Each fertilizer bought in a store will come with an N-P-K (NitrogenPhosphorusPotassium) value that will inform you exactly what the ratio is. Use this information to decide how to feed your plants properly.

Nutrients for better growth in cannabis plants
Nutrients for marijuana

New growers often give their plants too much nitrogen during the flowering stage, so be sure to avoid that because it could actually hinder the bud growth and development. You should have a different nutrient mix during your plants’ vegetative phase than during the flowering phase.

You can get something called Dyna-Gro “Bloom” food for your plants, which is one type of formula that is ideal for feeding plants that are in their flowering phase of growth.

If you buy something specifically for your plant’s flowering phase, it is likely going to be adequate. If you don’t want to use nutrients, you can instead get amended super soil to ensure your plants’ nutrients health.


Not only do your buds need plenty of bright light, but they also need proper airflow to become big and dense. If there are buds that are isolated or are not exposed to moving air, they probably will not get fat and dense like you want them to. Therefore, make sure that all your buds are hit by some ventilation or a light breeze.

proper ventilation for marijuana growing
Proper ventilation for growing cannabis plants

One way of achieving this is by actually defoliating your plants. This simply means removing leaves that are blocking the buds from getting the airflow that they need. Be careful, however, as this method should generally only be done by experienced growers.

If your plant is at all stressed or unhealthy, this is not the technique to be considering. An alternative option that will stress your plants out less is tucking the leaves instead of cutting them off.

Root health

Healthy roots are the basis of having a healthy plant. Healthy plants make fat, juicy buds, so it’s in your interest to keep the root system happy and healthy. Your roots need two key ingredients to thrive: water and oxygen. You should never overwater your plants, as this will cause a large number of problems.

cannabis plant root
Marijuana plant root

You should make sure to give them as much oxygen as possible in the air pockets of the soil. In hydroponics systems, the oxygen factor is even more important, which you can use an air stone for. Roots that have plenty of moisture and nutrients will thrive from increased amounts of oxygen.


When the flowering stage has begun, make sure that the humidity level consistently stays below 45%. This is especially important to avoid mold growing within your dense, moist buds. It can also make the potency greater and the smell richer, so it is doubly important to pay attention to this. Ventilation can also help keep the moisture of your plants down.

Measuring marijuana buds humidity levels
Measuring humidity levels

If you are growing outdoors, you should familiarize yourself with the humidity of your local climate, and choose a strain accordingly. Keep a close eye on the weather so you can cover your plants up if there is a storm coming. You need to keep your plants from getting too wet if you live in a rainy place and protect them from too much wind in a dry place.


Supplements should be added only after you are positive your plant has enough of the base nutrients. It is constantly debated about which supplement is best, but in general yield-increasing supplements are generally considered quite effective.

Those supplements often have sugars, amino acids, and other additives. These nutrients all will help your plants with their bud production and development.

Marijuana Fertilizer

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Growers who don’t want to deal with store-bought supplements instead will water their marijuana plants will a bit of blackstrap molasses. This both increases the size and density of your plants’ buds while also helping them improve their smell and taste.

Timing of the harvest

While there isn’t too much to say about this, it is worth mentioning that harvest time is one of the most effective ways to increase your bud’s size and potency.

You need to allow them plenty of time to grow, so make sure that you aren’t harvesting too soon. This will dramatically change how airy and developed your buds are.

Our free little Harvest Guide will help you determine the best moment to cut your plants. Download it here.

Drying and Curing

While the difficult part might seem to be the actual growing of the plants and their buds, equally important is drying and curing the end product. This will not only increase the density of your buds but also will improve the taste and smell while increasing the potency and “bag appeal” of your end product.

Drying cannabis buds
Drying marijuana buds

Usually, proper drying and curing of your marijuana buds can be done just with one-quart wide-mouthed mason jars, a drying rack of some sort, and a hygrometer and humidipaks if you feel like it – but those are optional. It’s a simple process that, when researched well and prepared correctly, will lead to amazing results.

Marijuana plant symptoms

  • Loose buds
  • Light buds
  • Airy buds

Marijuana buds can never be too dense, right? Wrong. There is indeed a limit when it comes to density in connection with quality. If your buds are too dense, they will have an increased chance of molding or rotting.

Additionally, you should always consider strains that don’t necessarily have the densest buds, because their effect on the user could easily be far superior to a product from a plant with super dense buds.

Remember that plants with strong genetics have less chance of getting sick and are less vulnerable to pests and diseases. So make sure to buy cannabis seeds from a trusted seed bank.

FAQ’s about airy marijuana buds

What causes loose airy buds?

Loose airy buds are generally caused by a lack of nutrients, improper lighting, and hot temperature. But you can still end up with the same problem if the nutrients are too much, the temperature is too low, the airflow is poor, or the plant has root problems.

Can you smoke airy buds?

Yes, you can smoke airy buds. Even though such buds have less THC, you might still like their effects depending on your preferences.

What do airy buds look like?

Unlike dense-tightly-packed buds, airy buds have a soft, thin appearance.

Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible.

Happy growing!


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Robert Bergman


Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations ... See profile

29 comments on “Avoid airy and loose marijuana buds”

    • Hey Jermaine, to promote dense budding in marijuana plants during the flowering stage, use a fertilizer with lower nitrogen (N) and higher phosphorus (P) and potassium (K) levels. Ensure micronutrients like calcium (Ca) and magnesium (Mg) are included. Consider bloom booster fertilizers. Maintain a pH of 6.0-6.5 and flush with plain water at the end of flowering. Adjust nutrient levels gradually and watch for strain-specific needs.

      Have fun growing!


  1. I am a first time grower, growing indoors. I grew 2 GG4 plants and was real happy with my outcome. Even though I only harvested about an ounce off each plant , It was a big success for me. My plants had big buds dripping with trichomes and gave you an incredible buzz. I now have 3 GG4 plants growing and 2 Grand Daddy Purple plants growing. I purchased the seeds from ILGM and the grow kits from A Pot for a Pot, and it was the easiest way to grow great quality buds. Thank you so much

  2. Newbie here. Growing some GS Cookies auto purchased from ILGM. No problems with germination. Lost 1 to a very large, very excitable puppy. Had an issue with infested soil from Lowe’s. Had to emergency transplant into clean soil. They’ve been playing catch-up since. Getting worried though, ladies went to ground 5-26. It’s 8-03. 10 weeks tomorrow and they’re nowhere near ready. Do I just wait?

  3. ugh, first time grower all ready ruined two crops, roses fine morning glories fine , crappy tropical plants fine, hibiscus fine…pot it is like walking through a fucking minefield!

    • I seen your post of a couple years ago. It’s trial and Definitely some errors. Just wondering if you figured some things out. Take it easy.

  4. I do accept as true with all the ideas you’ve offered on your post.
    They’re really convincing and can certainly work. Nonetheless, the posts are too brief for newbies.

    Could you please extend them a little from next time? Thanks
    for the post.

  5. First grow White Widow. Plants were very nice and tall, smelled good Have all the right equip for indoor grow LED light nice growbooth good vents ect but cannibus was not any good Buds were loose. Plants went for 100 days. Can you help

  6. hello fellow growers I tried some tao big bud auto flowering seeds. they are ready to harvest but buds are very loose and light somewhat sticky, very disappointed . never again

  7. Newbie here. Indoor grow ak-47 fem. Started 6 wks ago germination, planted, growing wonderfully. However I had been doing 24/7 grow light first 5 wks. I’ve just begun with a 12 &12 light cycle. Please let me know anything u recommend at this point. Soil is miracle grow & peat mix soil mixture. I’m medically in need and anxious to have a harvest. Thank you for your help.

  8. Hey Daen,

    I do not advise you to spray liquids on your plants. This action can promote mold and other issues.

    Plants need 6-8 hours minimum of direct ?Sun light. Density will suffer in low light conditions.

    Happy Growing, lw

  9. Hi

    I was just wondering how much direct sunlight is necessary for outdoor growing. My girls are positioned under large trees in the wild and only receive around 4 hrs direct light the rest dappled. will this make a difference to the density of the bud? Also can I spray liquid nutrients directly onto the leaves and flowers or should they only be added when watering the soil?

    Thank you so much for the download of the Growers Bible!!!!!!!


  10. HI there,

    I have revegetated plants many times. Nothing new about that. I have done this up to 4 times. So; Yes you can go another round if you wish. I generally clone the revegged plant in the 2nd/3rd grow .

    As far as your daylight experiment. I do not see where you will shorten a grow, without losing some yield. I also question as to whether the plant will bloom under 12/8. Good luck, and I invite you to join our Support Forum and post your experiments results. Happy Growing, lw

  11. I just finished reading your Grow Bible and found it to be very informative. I have been a grower for many years using seeds and clones, I have also re-grown harvested plants to harvest a second time. I don’t find any info from other growers doing a similar thing, I find the second growth to be very bushy so pruning some of the growth is necessary. The potency seems to be the same for either harvest and the buds just as big and juicy. I have never tried to re-grow a third time, plant would be to squirrely I think. I would be interested in hearing what you think about doing that to a marijuana plant.

    My buddy is doing an experiment with light period, He built a programmable timer and he has changed the grow day from 24 hours, 20 hours on, 4 hours off, to 20 hours, 16 on, 4 off, we are finding out if marijuana knows the difference. So far the plants seem to be doing fine and growing well, we will be going to a 12 on 8 off soon to make them flower. We are hoping we can shorten the grow time by 4 hours a day, over the total grow time we hope to pick up about 400 hours (16.5 days ) which will make time to grow more crops per year, less electrical costs, so far all looks good.

  12. Julie Siff

    If you are using common fertilizer; I recommend you get some 10-10-10 and some Micro Nutrients. Phosphorous grows bigger roots. It has nothing to do with density. That comes from light and a good nutrient regimen, obtain Micro Nutrients. You can purchase water soluble Micro Nutrients, or search for and buy Mitleider’s Micro nutrients. They cost about 15 bucks.

    Perhaps you would enjoy our support forum.

  13. Chuck,

    Of course it is. Days get shorter start5ing on June 21st, I believe, “Summer Solstice” is the longest day of the year. After that daylight decreases each day. This will induce flowering. You are in great shape. 🙂

  14. Hi Robert,
    First, thank you so much for your open sharing of all your vast knowledge. I am a medical mj patient in Colorado and have been growing outside for several years. Each year, my harvest improves with more knowledge. My buds are always light and airy, and I’d like to improve the density of the crop. My problem is that because I live in Colorado, the air temperature is blisteringly hot in mid-summer. We have suffered with over 90 degrees for the past month, and no end in sight, and you said that heat can be a stressor that makes for airy buds. Since I cannot control the air temperature, I will try a flowering fertilizer higher in P than the 6-4-4 I’m using in pre-flowering stage. Any other suggestions? Thanks!

    • My buds are hard when they’re on the plant that when I harvest they lose their a lot of their weight and they’re just fighting sloughing what do I do

  15. I’d like to take a moment to say how pleased I am to order from Robert and his company. I like the packaging and the way Robert stays with you while waiting on the mail. The end result are awesome flowers. My name is Robert also and I approve this statement!!!