So, if you read my post on succulents, you'll know at this point that a cactus is a type of succulent. Basically what that means is you don't have to water it very often *insert cheering noises here* ! Planting cacti is pretty simple, so if you're a novice gardener like myself--this post is for you.
The most important thing when choosing a planter for your baby cactus is to remember that it's not healthy for cacti to be over-watered. You won't want your cactus to sit in water, otherwise it might drown! So, the best option is to pick a planter with drainage holes. If you run into a problem (like I did) where you looooooove a certain planter without drainage holes, you can add a layer of larger rocks to the bottom for some DIY drainage. That way, the cactus won't be chilling in the deep-end every time you water it.
Take your plant out of its temporary-living home, and it's ready to move into its forever home. (Or at least where it'll stay for about a year until you find a cuter container for it and decide to re-plant it.) Gently brush away the excess dirt that won't fit into your planter, but be careful that you don't damage the root system. Plants have feelings, too.
Pro-tip when planting a cactus: Be careful. Cactus needles aren't the softest things around. Once you've planted each of your prickly guys, you'll then fill in the empty spaces with soil. On top of the soil, you can add a thin layer of pebbles. This isn't necessary for the plants to grow, but it looks cute, so you should probably do it.
If you want to get really fancy, you can research the type of cactus you bought and look up specific care instructions for it. Cacti are like babies; every one is different, and some tend to be more needy than others. As a general rule, though, baby cacti require less attention than actual babies.
And there ya have it! Cacti are cool… Well, even though they're technically plants for hot weather, but you get the point.