Red Party Cups for Sprouting Cannabis Seedlings and Early Vegetative Growth

You can use red party cups for sprouting cannabis seedlings and early vegetative growth.

Red Party Cups Make Great Garden Pots

Everyone knows the infamous red party cup. It holds sixteen liquid ounces and it's red. You've used it at backyard barbeques. It littered the floor of your college dormitory. Perhaps, you've seen them at a country-themed bar. And, you've most definitely guzzled neon red Hawaiian punch from one at at least one chidren's birthday party. They're great for a lot of things. Red party cups are also great plant containers for starting cannabis seedlings and early vegetative growth.

Red party cups might not be your first thought when thinking of small garden planters. They're not in the outdoor and garden section at the local big box store. They don't come pre-cut with drainage holes. They're not labeled as plant containers. And, you've been using them for drinking cold beverages out of for your entire life. They're not garden pots, right? Wrong.

Red party cups are fantastic garden pots.

Benefits of Party Cup Planters

  • Great at holding soil (grow mediums)
  • Lightweight
  • Easy to manipulate using scissors
  • Block sunlight from roots
  • Re-usable
  • Last forever
  • Inexpensive
  • Readily available
  • Easily replaceable

Turning Party Cups into Planters

It's super-duper simple to turn a party cup into a plant container.

Essentially, creating drainage holes in the cup is all you need to do. Proper drainage is a key factor when deciding what makes a planter good for growing cannabis.

When you water a plant you want the extra water to drain out. Standing water left sitting at the bottom of the pot leads to root-rot and other bad stuff that will negatively affect the plant's final outcome.

Allowing adequate drainage and excess run-off helps keep a growing cannabis plant happy and healthy.

Does the Cup Need to be Red?

You don't have to use a red cup - party cups come in lots of colors. Just don't use a clear cup.

The reason you don't want to use a clear party cup as a plant container is that roots are supposed to be underground. They're not supposed to be getting blasted with sunlight. Clear cups allow sunlight (or artificial light) to hit the root zone. Solid colored party cups do not.

Red, blue, green, purple, or any other solid color party cup is okay.

Does the Cup Need to be 16oz?

16oz party cups are ideal. They're big enough, but not too big. They have enough room to grow roots and retain a day or two worth of water.

9oz party cups (the smaller size) work too, but smaller plant containers mean more work for the gardener. The grow medium will dry out faster, so you'll need to water more frequently, and sometimes it creates too much chaos when you need to be hovering over the garden like a hawk all the time. You'll spend more time tending to them and you'll be forced to transplant sooner than with the 16oz cups.

You can grow in any size container you want, but 16oz cups work really well.

One Cup Technique

Take a one party cup and poke several holes in the bottom.

The single cup technique creates a very simple basic plant container. Sometimes less is more and simple is better.

Two Cup Technique

Another slightly more forward-thinking plant container technique is using two cups.

Start with two cups. One cup will remain unmodified and become the outer-container. You can remove the bottom from the second cup, as well as make a cut down one side, and use it as the inner-container. This technique allows you to feed the plant from the bottom up and also makes future transplanting into a larger container a simpler more mindful process.