Unless they’re posing a danger to you, your pokémon, or your crops (as they might do, given that young oddish sometimes use Absorb on anything they can touch as a means of exploring), it would actually be best to leave them alone. Oddish parents know what’s best when it comes to raising their hatchlings, and attempting to interfere with wild pokémon parents could place yourself at risk.
Still, I must congratulate you: the oddish family normally makes their beds in secluded parts of the forest where they’re less likely to be picked off by predators. If they’re making a bed in a garden very close to a human, that must mean they feel safe in your presence. Excellent work at keeping a pokémon-friendly yard!