According to the search results, there are several vegetables that can be planted in October in Texas. The best vegetables to plant in Texas in October include:

• Beets: Beets can be planted in August in Region I, and as late as December in Region V.
• Broccoli: Broccoli can be planted in July in Region I, and as late as November in Region V.
• Cabbage: Cabbage can be planted in August in Region I, and as late as December in Region V.
• Carrots: Carrots can be planted in August in Region I, and as late as December in Region V.
• Cauliflower: Cauliflower can be planted in September in Region I, and as late as November in Region V.
• Green onions: Green onions can be planted in August in Region I, and as late as December in Region V.
• Kale: Kale can be planted in September in Region I, and as late as November in Region V.
• Peas: Peas can be planted in August in Region I, and as late as November in Region V.
• Spinach: Spinach can be planted in September in Region I, and as late as November in Region V.
• Turnips: Turnips can be planted in September in Region I, and as late as December in Region V.

It is important to note that planting times may vary depending on the specific region in Texas. Gardeners should consult the USDA Hardiness Zone map to determine their specific zone and planting times. Additionally, gardeners should prepare the soil by breaking it up several inches deep and mixing in compost or soilless potting mix.