This guide is general information for adults 21 and older. It is not legal advice. Growing cannabis at home is legal only in some places, and limits differ by state and city. Check the law where you live before you plant a seed or post a photo of a plant.

GrowDiaries is one of the best known places on the web to log a cannabis grow week by week. Growers share their setup, the strain and breeder, their lights and nutrients, and a photo record from seed to harvest. A clear diary helps you learn from your own grow, and it gives other home growers useful data to compare. This guide explains how to post a cannabis grow diary on GrowDiaries, how to structure it, how to take photos that actually help, and how to protect your privacy along the way.

Site menus and labels change from time to time, so treat the steps below as a general path rather than exact button names. If something looks different when you log in, look for the same idea under a nearby menu.

Before you start: is a public grow diary right for you?

A public diary is a public record. Before you post, ask yourself three questions.

• Is home growing legal where you live? Only post if your grow is lawful under your state and local rules. Some states allow adults 21 and older to grow a small number of plants, some allow only registered medical patients, and some allow no home growing at all. Our guide to legal requirements for growing weed plants in your state is a good starting point.
• Are you comfortable with strangers seeing your space? Even without your name, photos can reveal more than you expect.
• Will you keep it updated? A diary that stops at week three helps nobody. Plan to post at least once a week.

If the answers are yes, you are ready to set up your diary.

Step 1: Create an account with privacy in mind

Sign up with an email address you use only for grow hobbies. Pick a username that has nothing to do with your real name, your town or your other social accounts. Skip the profile photo or use a picture of a plant or a logo. Read the site’s privacy settings and terms so you know what is public by default.

Keep the same habits you would use on any forum. Do not post your address, your workplace, or anything that ties your grow to you as a person. Do not share login details, and turn on any account security options the site offers.

Step 2: Set up the diary basics

When you start a new diary, the site asks for the core details of your grow. Fill these in as completely as you can, because they are what make your diary useful to other growers.

• Strain and breeder. Name the strain and where the seeds came from. If you grow autoflower seeds from Kind Seed Co, say so, and note whether the seeds were autoflowering or photoperiod.
• Grow type. Indoor tent, indoor room, greenhouse or outdoor.
• Medium. Soil, coco, hydro or another mix.
• Lights. The make, model and wattage of your light, plus the height you run it at.
• Space size. Tent or room dimensions.
• Watering and feeding. How you water and which nutrient line you use.

Accuracy matters more than perfection. If you are not sure of a number, say it is an estimate.

Step 3: Post weekly updates with a clear structure

GrowDiaries organizes a diary by week and by stage, such as germination, vegetative growth, flowering and harvest. A steady format makes your diary easy to follow. Here is a simple structure you can repeat every week.

1. Week and stage. For example, week 4, vegetative.
2. Environment. Day and night temperature, humidity and light schedule.
3. Light. Height and dimmer setting, plus any change you made.
4. Water and feed. Volume, how often, and any pH or runoff readings you take.
5. Training. Any low stress training, topping or defoliation you did. Our guide to low stress training for cannabis covers the basics.
6. Problems. Pests, deficiencies, heat stress or anything that went wrong.
7. Notes. What you learned and what you will try next week.

Be honest about mistakes. Other growers learn the most from diaries that show what went wrong and how it was fixed.

Step 4: Take photos that actually help

Good photos are the heart of a grow diary. They do not need a fancy camera. A phone works fine if you follow a few habits.

• Turn off or step away from colored grow light when you can. Many LED lights cast a purple or pink glow that hides real leaf color. If your light has a dimmer or a white mode, use it for photos, or use a small white flashlight. Never look straight into a grow light.
• Shoot the same angles each week. A full plant shot from the side, a top down canopy shot and one or two close ups make it easy to compare weeks.
• Show problems clearly. If a leaf has spots or curling, take a sharp close up of the top and the underside.
• Add scale. A ruler or a pot of known size helps readers judge height.
• Keep the background plain. A tent wall is perfect. Windows, mail, family photos and street views are not.

Step 5: Protect your privacy in every photo

This is the step most growers skip. Photos carry hidden data, and backgrounds say a lot.

• Remove location data. Many phones save GPS coordinates inside the photo file. Turn off location tagging in your camera settings, or use a tool that strips metadata before you upload.
• No faces, no people. Keep yourself, family and guests out of the frame. Hands are fine if you are comfortable with that.
• No identifying details. Hide mail, packages with shipping labels, prescription bottles, house numbers, car plates and anything with your name on it.
• Watch reflections. Mirrors, windows and shiny pots can reflect faces or rooms.
• Think about outdoor shots. Skylines, landmarks and neighboring houses can reveal where you live.

If you are unsure about a photo, leave it out. Your diary will still be useful.

Step 6: Log your harvest and results

At the end of the grow, add a harvest report. Note the date you chopped, how you dried and cured, and how the dry weight came out if you measured it. Share honest notes on what went well and what you would change next time. Avoid medical or health claims about the finished product. Keep the focus on the grow itself.

Being a good member of the community

Grow communities work best when people are kind and specific. A few habits help.

• Comment with useful details. Instead of “looks great,” ask about the light height or the feeding schedule.
• Give feedback gently. Many diaries come from first time growers. Suggest, do not scold.
• Keep disputes private or let them go. Forums sometimes have arguments between members. Stay out of public pile ons and report real rule breaking to the site moderators instead.
• Credit sources. If you followed a guide or a breeder’s tips, link to it.
• Follow the site rules. Read the community guidelines and stay within them, including any age rules.

Common mistakes to avoid

• Skipping the setup details. Without light, space and medium info, readers cannot compare your results.
• Posting only good weeks. Problems are the most valuable part of a diary.
• Inconsistent photos. Changing angles and lighting every week makes progress hard to see.
• Oversharing. Location data, faces and street views can put your privacy at risk.
• Forgetting the law. A diary does not make an unlawful grow lawful. Stay within the plant count and rules where you live.

If you are new to growing, our ultimate beginner’s guide to growing cannabis and our grow guide for autoflowering cannabis plants will help you plan the grow you want to document.

Frequently asked questions

Do I need to use my real name on GrowDiaries?

No. Use a username that is not linked to your real name, your town or your other accounts. A separate email address for grow hobbies adds another layer of privacy.

How often should I update my grow diary?

Once a week is a good rhythm, since the site is organized by week. Post extra updates when something important happens, such as a transplant, a change in light schedule or a problem you need help with.

What photos should I include each week?

A side shot of the full plant, a top down canopy shot and close ups of anything unusual. Use a white light or turn off colored grow lights for accurate color. Strip location data before you upload.

Can I post a diary if home growing is not legal where I live?

You should only grow and post if your grow is lawful under your state and local rules. Laws vary widely, so check current law where you live first.

Is GrowDiaries only for experienced growers?

No. Many diaries come from first time growers. A clear, honest beginner diary is often more helpful to others than a perfect one.

Sources

• GrowDiaries, site home page and diary sections, growdiaries.com, accessed October 29, 2026.
• Kind Seed Co, legal requirements for growing weed plants in your state, accessed October 29, 2026.

The bottom line

To post a cannabis grow diary on GrowDiaries, set up a private account, fill in your strain, light and space details, post a structured update each week, take consistent photos and strip anything that could identify you. Be honest about problems, and keep your grow within the law where you live. Ready to start the grow you will document? Browse autoflower seeds or 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.