Can I plant sunflower next to bush beans?

Yes. Sturdy stalk can serve as a living trellis for pole beans once well established.

Can I plant sunflower next to cucumber?

Yes. Sturdy stalk can serve as a living trellis for climbing cucumbers.

Helianthus annuus

Spacing: needs about 2 square feet per plant. Mature height: 3-12 ft.

Bush Beans: Sturdy stalk can serve as a living trellis for pole beans once well established.
Cucumber: Sturdy stalk can serve as a living trellis for climbing cucumbers.

No known antagonists recorded for Sunflower.

Can I plant sunflower next to bush beans?: Yes. Sturdy stalk can serve as a living trellis for pole beans once well established.
Can I plant sunflower next to cucumber?: Yes. Sturdy stalk can serve as a living trellis for climbing cucumbers.

Companion planting for Sunflower: which plants to grow next to it, which to keep apart, and the reason behind each pairing.