By Steven Voser


Cannabis is a strong plant capable of surviving extreme conditions. However, this doesn’t mean large, dense yields are guaranteed. Ensuring the correct conditions for optimal growth are maintained should be the main priority for any grower, especially if dense bud is their primary objective.

The most common causes of an underwhelming, airy crop are bad lighting, poor nutrition, overwatering, and extreme temperatures. Letting just one of these factors get out of control—especially towards the end of a plant’s life cycle—can dramatically impact the quality of the bud. We are going to take a look at each in turn, and see how they can be optimised to produce the densest yields possible.

Achieving Dense Buds — Start With the Right Genetics

The first step to growing dense buds is picking the right genetics. Indica-dominant strains, in particular, tend to produce denser, more resinous buds than sativa-dominant varieties. Because sativa strains originate from warmer, more tropical climates, they’ve naturally developed a looser, airier bud structure that helps protect the plants against bud rot and other mold-related issues.

Indica-dominant strains, on the other hand, originate from cooler, drier, mountainous regions with colder climates and shorter summers. As a result, these strains have developed a shorter stature, faster flowering time, and, you guessed it, a tighter bud structure.

When shopping for dense strains, don’t get caught up looking for pure indicas. Today, almost all cannabis strains on the market are poly-hybrids, meaning they’ve been extensively crossbred. Any indica-dominant strain from a respected seed bank (like RQS) should have the dense bud structure you’re looking for.

How To Grow Cannabis With Dense Buds

How To Grow Cannabis With Dense Buds

Choosing the Right Pots

While you can technically grow cannabis in any old pot, some will inherently do a better job at promoting the growth and health of your plants. And healthier plants are obviously going to produce much better (and potentially denser) buds than unhealthy ones.

For the best results with any grow, we always recommend using Air-Pots or fabric (“Smart”) pots. Unlike regular ceramic or plastic pots, Air/Smart pots promote much better air circulation around your plants’ roots. Not only does this make it easier for your plants to respire, but it helps them develop stronger root systems that grow downward rather than around the pot's edges. That’s because the open airflow around the edges of the pots trims the roots as they get closer.

Growing Dense Cannabis Buds Outdoors: Garden Beds vs Pots

If you’re lucky enough to be able to grow cannabis outdoors, one of the best ways to encourage dense buds is by planting it directly in the ground or in very big pots (25l or more). Plants grown in smaller pots will gradually run out of soil and space as their roots grow, making it harder for them to take up nutrients and water from the substrate. 

How To Grow Cannabis With Dense Buds

Optimising Lighting

It's no secret that cannabis plants need ample light to conduct key physiological processes that ultimately fatten your buds up. So, what can you do to optimise lighting indoors or out?

  • Light Intensity

Maintaining optimal light intensity is crucial. The more light buds get, the bigger they grow. Never let your lights get too close or too far from the tops of your plants—too close, and plants risk being burnt by the heat; too far, and the light will not be strong enough to produce satisfactory results.

Ideally, lights need to be positioned far enough away that the whole canopy is equally exposed, but close enough that they can benefit from increased intensity without burning. A good test is to place your hand right above the canopy; if the heat produced by the lights is uncomfortable for you, it is uncomfortable for your plants.

  • Reflective Walls

Reflective walls are one of the best ways to maximise lighting in an indoor grow room or tent. White plastic or Mylar, for example, naturally reflect excess light from your grow light back onto your plants, helping them develop healthier vegetative growth and denser buds. 

How To Grow Cannabis With Dense Buds
  • Light Schedule

In general, the more light cannabis plants receive, the better. However, you’ll also want to make sure your light bill isn’t too hard on your back pocket. For the best results, without going overboard, we recommend sticking to an 18/6 light cycle during veg and 12/12 during flower. 

  • Light color

Cannabis is able to use certain light frequencies more effectively than others at certain stages of its life. Check out your flowering bulb’s color emission; most manufacturers put the details on the box of the bulb. During the flowering stage, cannabis utilises the red frequencies of the light spectrum most efficiently, so using a bulb with a high output (660nm is ideal) during bloom will help boost the amount and density of bud. However, it is important to note that cannabis uses the entire spectrum to some degree, so bulbs should be full-spectrum with the red enhanced, not exclusively red.

Want to dial in your light and environment for bigger buds? Download our Pro Growing Guide for precise PPFD targets, UV-B timing, CO₂ supplementation strategies, and temperature/humidity protocols that sculpt an ideal grow room.

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  • Lighting Outdoors

If you’re growing outdoors, you’ve got the advantage of working with the best grow light on (or off) the planet. To help your outdoor cannabis plants produce dense buds, make sure you position them in the parts of your garden that receive the most sunlight, at the best times of day. For example, many growers try to find a spot that receives lots of sun in the morning and early afternoon, with more shade during the hottest hours of the late afternoon.

How To Grow Cannabis With Dense Buds

Optimising Temperature and Humidity

Temperature and humidity need to maintain an ideal balance in order for plants to develop dense and healthy buds. Otherwise, it could spell meagre results, or, worse—disaster.

  • The Correct Temperature for Cannabis

It is important that the temperature stays within an acceptable range. Average and peak temperatures should never be too low at night, and, more importantly, should never go above 30°C during daylight hours (if possible). The ideal range is between 18°C and 26°C. Too hot, and flowering will be stunted and buds can be seriously damaged. Outdoors, high temperatures can be an issue depending on where in the world you're located. Gently spraying the plants with water can help them bear the heat of July and August temperatures (in the Northern Hemisphere). Just remember to avoid spraying any water on the leaves when your plants receive direct sunlight. During the hottest hours of the day, this can cause sunburns on the foliage.

  • Ideal Relative Humidity for Cannabis

Closely tied in with temperature, it is important that humidity also remains within acceptable bounds. Never surpass 60% RH in the flowering phase and try to progressively reduce it down to 45% in the last 2–3 weeks before harvest. The plant will go into overdrive as it seeks to protect its flowers, responding by producing denser buds with more resin. Lower humidity will also help avoid mold formation.

  • Vapour Pressure Deficit (VPD)

Vapour Pressure Deficit is all about getting the temperature and humidity in your grow room/tent exactly right. Manage that, and you’ll notice exceptional results come harvest time. By achieving the perfect balance between your temperature and relative humidity, you’ll help increase the rate at which your plants take up light, water, and nutrients, resulting in faster growth (during veg) and the development of bigger, denser buds during bloom.

How To Grow Cannabis With Dense Buds
  • Proper Plant Spacing

Another key aspect of growing denser buds is proper plant spacing. By keeping enough distance between your plants, you’ll ensure they don’t overshadow each other, helping to maximise the amount of light that reaches the bud sites on each plant. Plus, you’ll also help promote better air circulation throughout your grow room or garden, which makes it easier for plants to breathe and protects them against issues like mold, pathogens, or pests.

  • Supplementing With CO₂

Increasing the amount of CO₂ in your grow room can help you grow bigger, denser buds. By doing so, you’ll help plants photosynthesise faster and encourage them to take up more nutrients and water. Unfortunately, supplementing with CO₂ isn’t cheap, and it can drive up the humidity in small spaces.

  • Managing Temperature and Humidity Outdoors

If you’re an outdoor grower, you're obviously at Mother Nature’s mercy. And, while you won’t have complete control over the temperature and humidity in the environment, there are a few things you can do to maximise your plants’ potential. These include:

- Properly spacing plants

- Employing proper watering and feeding techniques

- Placing your plants in a part of your garden with a gentle breeze (where possible)

How To Grow Cannabis With Dense Buds

- Covering your plants (or bringing them inside) when it gets too hot

- Protecting them from harsh rains, storms, gale winds, etc.

How To Grow Cannabis With Dense Buds

Nutrition — Properly Feeding Your Plants

You need to eat and drink, and so do your cannabis plants. To avoid light and airy buds, you've got to give your cultivars something to snack on. Here's what you need to consider.

  • Feeding Cannabis

Each strain has different feed requirements, so getting to know just how much feed a plant needs, and when to change amounts, comes with time and experience. However, generally, cannabis requires higher levels of nitrogen during the vegetative stage to push growth to the max, followed by higher levels of potassium during the flowering phase to fuel bud production. It is always a good idea to keep an eye on the pH of your growing medium, as it can affect nutrient uptake.

  • Caring for Roots

As we mentioned earlier, the key to healthy cannabis plants is a healthy root system. One of the best ways to encourage your plants to grow big, healthy roots is by using mycorrhizae and other beneficial fungi and bacteria. Don’t underestimate these tiny organisms; not only do they help create the perfect environment for your plants’ roots (helping them function and grow at their best), but they also protect them from pathogens like Fusarium and Botrytis. 

How To Grow Cannabis With Dense Buds
  • Overwatering

Roots need oxygen as well as water. Excessive watering fills all the small air pockets in the soil, eliminating any trace of oxygen for hours, or even days. As a result, plants will start showing droopy and curling leaves, and bud quality will be compromised if the problem is not solved.

Be careful not to water if the soil is still wet from the last drench, and be sure your pots can drain out any excess with ease. Moreover, always choose a light soil mix and add some extra perlite. Underwatering damages plants too, but that’s less common and much easier to fix.

How To Grow Cannabis With Dense Buds
  • Using Molasses and Amino Acids

Molasses is an often overlooked supplement that needs to be in every grower's nutrient arsenal. A by-product of the sugar-refinement process, molasses is packed with nutrients that microorganisms such as beneficial bacteria and healthy fungi love. By regularly applying molasses to the soil, you’ll be helping to create a breeding ground for these microorganisms, creating the perfect environment for your plants’ roots in turn.

Amino acids can be used as a “super supplement” to promote the cellular strength of your plants, facilitate the growth of intracellular plant structures, improve the transportation of nutrients, and much more. Make sure to use amino acids in your next grow to ensure a heavier harvest of big, dense buds.

  • Going Organic

At RQS, we love growing cannabis organically, not only because it’s better for the environment, but because it produces a superior final product. While it might seem daunting, growing cannabis organically is really simple. A solid organic super soil (which you can make at home) and some compost or compost tea are essentially all you need to start your own organic cannabis garden, both indoors and outdoors.

How To Grow Cannabis With Dense Buds

Knowing When to Harvest

One of the keys to growing bigger, denser cannabis buds is patience. We see so many young, inexperienced cannabis growers eagerly harvest their plants far too early. The final stages of flowering are super important for bud development; as your plants are pushed further and further into flowering without pollination, they’ll fatten up and develop a thick, rich resin.

Make sure to always have a microscope on hand and harvest your buds once roughly 70% of the trichomes have turned cloudy. Alternatively, if you prefer a heavier, more relaxing stone, wait a little longer and harvest your plants once 50% of their trichomes have turned amber.

Preparing for Harvest Time Outdoors

Nailing harvest time outdoors can be tricky. Outdoor cannabis gardens are naturally more prone to stress from pathogens/pests and the environment. As harvest time approaches outdoors, we recommend you invest in biological pest control like predatory insects (ladybirds, beetles, and praying mantis) and healthy bacteria/fungi (found in supplements like worm castings and compost) to help protect your plants from pathogens and harmful insects.

We also recommend keeping a close eye on the weather and taking the necessary steps to keep your plants protected from fall rains, storms, and early frosts.

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Privacy Policy - Royal Queen Seeds

To ensure a safe online environment and guarantee adequate data protection, we strictly comply with all legal requirements. In this privacy statement, we provide information about how and for what purpose data is collected, safety measures, storage periods and contact details.


COMPANY NAME: SNORKEL SPAIN, SL (hereinafter ROYAL QUEEN SEEDS)

C/ Vilar d'Abdelà, 5 (nave 1) CP: 08170 de Montornès del Vallès

+34 937 379 846

support@royalqueenseeds.com


The present Privacy Policy sets out the terms on which we will treat personal data at ROYAL QUEEN SEEDS; this includes any personal data collected through our website https://www.royalqueenseeds.com/ as well as any other data we process in the course of our business activities.

ROYAL QUEEN SEEDS collects the following personal data for the purposes listed below:

SECTION 1 – PERSONAL INFORMATION WE COLLECT

1.1 Account purchases

Account purchases can only be made if you are in possession of a personal account. When you create an account or purchase something from our shop, as part of the buying and selling process we collect the following personal information that you provide to us:

This information is required for delivery. In addition, when you browse our shop, we automatically receive the Internet Protocol (IP) address of your computer. Based on this information, we can optimise your online experience and at the same time protect our online environment.

Purpose of data collection

We collect and store account-related data for the following purposes:

(a) to carry out obligations arising from any contracts between you and us, and to provide you with information, products and services that you may request from us;

(b) to set up, manage and communicate with you about your account and your orders;

(c) to conduct market research and analysis;

(d) to confirm your age and identity, and to detect and prevent fraud.

1.2 Newsletters

With your explicit permission, we may send you newsletters about our shop, new products and other updates. We send newsletters based on your explicit consent. In the event that you purchase a product, and in accordance with current regulations, we may send you commercial communications in accordance with the legitimate interest of our company, always about products or services similar to those you have purchased or contracted. In any case, you may exercise your right of opposition through the channels announced in this Privacy Policy. The following information is collected in relation to the newsletter:

We do not need to know the sex of the person in order to send the newsletter (data minimisation: by law we must ask for data that is strictly necessary to provide the service, and in this case knowing the sex is not necessary to send the newsletter).

Purpose of data collection

The data collected is used to:

(a) personalise our emails, including your name and gender;

(b) provide gender-specific content.

You can withdraw your consent at any time by using the link provided in the newsletter or the contact information provided in section 2.

1.3 Customer service and contact form

In order to provide appropriate support, our customer service employees have access to information related to the account. Consequently, their support will be highly effective and friendly. The data provided in our contact form is used by our CRM provider, SuperOffice. We will only use your details to respond to your message.

SECTION 2 – LEGITIMATE INTEREST

If you have purchased any of our products, please note that we may process your personal data for promotional purposes, based on Royal Queen Seeds' legitimate interest only to offer you products or services from our company and about products or services similar to those you have purchased. You may exercise your right to opt out of future messages by the means set out in this Privacy Policy or through any notification you receive.

2.1 How do you withdraw consent?

If you change your mind, you can withdraw your consent for us to contact you for the purpose of collecting, using, or disclosing your data at any time by reaching out to us at: support@royalqueenseeds.com.

SECTION 3 – DISCLOSURE

We may disclose your personal information if we are required to do so by law or if you breach our Terms of Service.

SECTION 4 – HOW LONG DO WE KEEP YOUR DATA?

At Royal Queen Seeds, we will not retain your data for longer than is necessary for the purposes described in this Policy. Different retention periods apply for different types of data; however, the longest period we will normally hold any personal data is 10 years.

4.1 Account information

Data relating to the account remains relevant for as long as the consumer is in possession of an account. Therefore, the data remains documented for as long as the account exists. When our customers delete an account, the associated data will be deleted within a reasonable period of time. Requests regarding the inspection or correction of stored personal data or the deletion of an account can be sent to support@royalqueenseeds.com.

4.2 Newsletters

In the event that you give us your consent to inform you about our products or services, we will keep your data until you express your wish not to receive any further communications from us. However, we regularly (every month) carry out a relevance check. Registered customers (and their personal information) will be deleted whenever customers do not reply to our request. In addition, our newsletter mailing has an opt-out feature. Consumers can withdraw their consent by using this opt-out feature.

SECTION 5 – COOKIES

Cookies are small information files that notify your computer of previous interactions with our website. These cookies are stored on your hard drive, not on our website. Essentially, when you use our website, your computer displays its cookies to us, informing our site that you have visited before. This allows our website to function more quickly and remember aspects related to your previous visits (such as your username), making your experience more convenient. At Royal Queen Seeds, we use two types of cookies: functional and analytical.

5.1 Functional Cookies

Functional cookies are used to enhance your online experience. Among other things, these cookies track what is added to your shopping cart. The use of these cookies does not require prior authorization.

5.2 Analytical Cookies

Analytical cookies are used for research and market analysis. The data collected with these analytical cookies is anonymous, making it unusable for third parties. The use of these cookies does not require prior authorization.

SECTION 5 – THIRD-PARTY SERVICES

Third-party services are required to conduct transactions and provide our services. In general, the third-party providers we use will only collect, use and disclose your information to the extent necessary to enable them to perform the services they provide to us.

However, certain third-party service providers, such as payment gateways and other payment transaction processors, have their own privacy policies regarding the information we must provide to them for your transactions.

We encourage you to read the privacy policies of these providers so that you can understand how these providers will handle your personal information.

In particular, certain suppliers may be located or have facilities located in a different jurisdiction than yours or ours. Therefore, if you choose to proceed with a transaction involving the services of a third party, your information may be subject to the laws of the jurisdiction in which that service provider or its facilities are located.

Once you leave our website or are redirected to a third-party website or application, you are no longer governed by this Privacy Policy or the Terms of Service of our website.

Web analytics service (anonymous data)

On this website we have integrated an element of a web analytics service (with anonymisation functionality). Web analytics can be defined as the gathering, processing and analysis of data about the behaviour of visitors to websites. An analytics service collects, among other things, data about which website a person came from (the so-called referrer), which sub-pages they visited or how often and for how long they visited a sub-page. Web analytics is mainly used for website optimisation and for a cost–benefit analysis of internet advertising.

Courier service

To complete deliveries we use a courier service. This courier service carries out the delivery between our company and the consumer's home. To complete these logistics, the company requires access to the consumer's name and address information.

Mailing service

Royal Queen Seeds uses a third-party mail service provider to send its newsletter. This provider has access to limited account information related to opt-in consent (e.g. email address).

Marketing services

Royal Queen Seeds has the support of a company that specialises in marketing and communication activities. Their access to personal information is very limited and mostly anonymous.

Payment services

At Royal Queen Seeds we use external payment services to handle our transactions (e.g. credit card payments).

SECTION 6 – SECURITY

To protect your personal information, we take reasonable precautions and follow industry standard best practices to ensure that it is not inappropriately lost, misused, accessed, disclosed, altered or destroyed.

If you provide us with your credit card information, the information is encrypted using secure socket layer technology (SSL) and stored using AES-256 encryption. Although no method of transmission over the internet or electronic storage is 100% secure, we follow all PCI-DSS requirements and implement additional industry standards that are commonly accepted. Information related to the account is protected with a hashing method. This method transforms the information into a generated hash. As a result, confidential information is protected and invisible, even to us. In addition, our databases are exceptionally protected against unauthorised access. For example, access to the database is only possible and permitted via approved IP addresses (e.g. from Royal Queen Seeds headquarters). Other attempts and addresses are rejected at all times.

Furthermore, data is anonymised as much as possible, so it cannot be directly linked to a specific consumer. With this data, however, we may be able to carry out market research and analysis. In addition, the third parties concerned (e.g. mailing service) are examined prior to our collaboration, comply with the GDPR from the EU and receive a processing agreement. Within Royal Queen Seeds, employees are assigned different access permissions. Specific permission provides access only to information that is strictly required to perform a task. Digital security measures are subject to change and must meet high requirements to ensure the safety of online customers. That is why, at Royal Queen Seeds, we appoint a security officer. Regular verification and improvement of security measures (where necessary) are part of the role.

SECTION 7 – CHANGES TO THIS PRIVACY POLICY

We reserve the right to modify this Privacy Policy at any time, so please check back regularly. Changes and clarifications will be effective immediately upon being published on the Website. If we make substantial changes to this policy, we will notify you here that it has been updated so you will know what information we collect, how we use it and under what circumstances, if any, we use and/or disclose it.

SECTION 8 – YOU HAVE THE RIGHT TO: