You can usually gift in Plants Vs Brainrots by opening the in-game shop and tapping the present icon next to the Robux price for the item or pack you want to send. A guide on the game also notes that you can gift card packs to friends this way on PC.

PC steps

  1. Launch Plants Vs Brainrots on Roblox.
  2. Open the shop or store menu.
  3. Find the item you want to buy as a gift.
  4. Click the present/gift icon next to the Robux button.
  5. Pick your friend and confirm the purchase.

What to know

  • This is for giftable shop items , not every item in the game.
  • Some older Plants Vs Brainrots videos mention gifting/trading being disabled at times, then later returning, so the feature can change with updates.
  • If you do not see the present icon, the game may not currently allow gifting for that item or the feature may be temporarily unavailable.

Simple check

If you want, the fastest test is: open the shop, look for a Robux item, and see whether a gift/present button appears beside it.

TL;DR: On PC, go to the shop, click the present icon next to a Robux item, then choose a friend to gift it to.