If your question is to confirm whether the woman on the video actually asked the soldier to put seeds in his pockets so that when he's dead sunflowers will grow from his body, then the answer is yes, that's exactly what she did. If your question is to confirm whether the soldier is Russian, then the answer is also yes - that's exactly what he answers to the woman earlier in the exchange, which is captured in the video https://twitter.com/the_ins_ru/status/1496857969723596810 linked by @evargalo. The transcript of the video in https://i.stack.imgur.com/j8Bsk.jpg linked by @mast is nearly spot-on, I can tell that as a Ukrainian citizen born in Russia that's fluent in both languages. The relevant parts of the exchange, verbatim:
...
- Woman (in Ukr.): "What exercises? You're what, Russians?"
- Soldier: "Yes."
- Woman: (in Ukr.) "What the f$$k are you doing here?"
- Soldier: "Well, right now our conversation will not lead us anywhere..."
- Woman: (in Rus.) "You're occupants, you're fascists, you came to our land, why the f$$k did you come to us with weapons? Take raw seeds put them in your pockets, so that sunflowers grow when you lie down here".
...
If your question is whether the video was filmed specifically in Henychesk, Kherson region - that I cannot confirm. What I can confirm is that this was definitely filmed somewhere where:
- people are not happy to see Russian soldiers
- people speak Ukrainian (woman in the beginning of the video @evargalo linked was speaking in Ukrainian until right before "you're occupants", at which point she switched to Russian with a fairly typical Ukrainian accent)
- street layout, surrounding architecture, and pavement condition are very typical of post-Soviet countries
- Russian soldiers wear white bands on arms and/or legs for identification
I can think of plenty places where the first point would be the case, fewer where second and third points would be the case, and I'm aware of only one place where the fourth point would be the case - Ukraine. The street layout is more typical of cities or at least sizeable towns rather than villages, but beyond that I'm unable to pinpoint specific location the video was made in - there are some buildings I do not recognize, and I can't seem to see anywhere any markers with any names.
One more data point - Russian soldier claimed they're doing military exercises. According to some reports (including the recordings of Russian soldiers who were captured by Ukrainians); many of the Russian soldiers during the invasion on February 24 2022 were not told they are going to war and instead were told this is all part of military exercises. Which, everything else aside, makes it highly likely the video is indeed from the early days of 2022 Russian invasion of Ukraine.