ESBD_436659_1752776008104_2. Specification 595-15-43941.pdf
PDF 199 KB Posted
- Solicitation number
- 601330000043941
- Issued by
- Harris County, Texas
About this file
This document is a specification from the Texas Department of Transportation (TxDOT) for wildflower seeds for the Houston District Maintenance Operations, dated July 2025. The specification details two distinct wildflower seed mixes and individual seed options, each packaged in 50-pound or 25-pound bags. Wildflower Seed Mix 1 contains eight different native Texas flower species, including Texas Bluebonnet, Indian Blanket, Plains Coreopsis, Black-Eyed Susan, Mexican Hat, Lanceleaf Coreopsis, Lemon Mint, and Pink Evening Primrose, with specific weight allocations for each species. Wildflower Seed Mix 2 features five different native Texas flower species, with a higher proportion of Texas Bluebonnet.
The specification mandates that all seeds must be native to and originate from Texas, with seed purity requirements of 80% or higher and less than 5% weed seed. Vendors must provide detailed documentation including seed origin, purity percentage, and germination percentage for each species. If certain grass or flower plant species are unavailable from producers, the specification allows for proportional increases of other species in the mix, subject to TxDOT's prior approval. The document is designed to be shared through the National Institute of Governmental Purchasing (NIGP) and cannot be sold for profit, with TxDOT disclaiming liability when the specification is used by other entities.
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Text version
SPECIFICATION NO.
TxDOT 595-15-43941
DATED: JULY 2025
1-2
TEXAS DEPARTMENT OF TRANSPORTATION
WILDFLOWER SEEDS FOR THE HOUSTON DISTRICT MAINTENANCE OPERATIONS
PUBLICATION
This specification is a product of the Texas Department of Transportation (TxDOT). It is the practice of TxDOT to support other entities by making this specification available through the National Institute of Governmental Purchasing (NIGP). This specification may not be sold for profit or monetary gain. If this specification is altered in any way, the header and any and all references to TxDOT must be removed.
TxDOT does not assume, nor accept, any liability when this specification is used in the procurement process by any other entity.
PART I
GENERAL CLAUSES AND CONDITIONS
1. Vendor must provide seed origin, purity percentage, and germination percentage of each species as requested.
2. Seed purity of all mixed and individual seeds must be 80% or higher with less than 5% weed seed.
3. Provide seed from the previous season’s crop meeting the requirements of the Texas Seed Law, including the testing and labeling for pure live seed (PLS = Purity × Germination). Furnish seed of the designated species in labeled unopened bags or containers. Seed labels on each bag must contain the following information:
3.1. Lot number.
3.2. Seed type/name.
3.3. Total weight (lbs.).
3.4. Mix percentage by species.
3.5. Percentage of crop seed.
3.6. Percentage of weed seed.
3.7. Origin of seed.
4. Seeds must be native to and originate from Texas. If a grass plant species is not available by the producers, the other grass plant species in the seeding mix will be increased proportionally by the percentage of the missing plant grass species. If a flower plant species is not available by the producers, the other flower species in the seeding mix will be increased proportionally by the percentage of the missing flower species. Substitute species and rates require approval of TxDOT before being incorporated into the seeding mix.
SPECIFICATION NO.
TxDOT 595-15-43941
DATED: JULY 2025
2-2
PART II
SPECIFICATION
1. SCOPE: This specification describes wildflower seeds for the Houston District Maintenance Operations.
2. Wildflower Seed Mix 1: Must be 50 pounds per bag of mixed seed at the following rates:
2.1. Texas Bluebonnet (Lupinus texensis) - 6 lbs. (12%)
2.2. Indian Blanket (Gaillardia pulchella) - 6 lbs. (12%)
2.3. Plains Coreopsis (Coreopsis tinctoria) - 10 lbs. (20%)
2.4. Black-Eyed Susan (Rudbeckia hirta) - 6 lbs. (12%)
2.5. Mexican Hat (Ratibidia columnifera) - 9 lbs. (19%)
2.6. Lanceleaf Coreopsis (Coreopsis lanceolata) - 6 lbs. (12%)
2.7. Lemon Mint (Monarda citriodora) - 4 lbs. (7%)
2.8. Pink Evening Primrose (Oenothera speciosa) - 3 lbs. (6%)
3. Wildflower Seed Mix 2: Must be 50 pounds per bag of mixed seed at the following rates:
3.1. Texas Bluebonnet (Lupinus texensis) - 16 lbs. (31%)
3.2. Black-Eyed Susan (Rudbeckia hirta) - 9 lbs. (19%)
3.3. Mexican Hat (Ratibidia columnifera) - 12 lbs. (25%)
3.4. Purple Coneflower (Echinacea purpurea) - 7 lbs. (13%)
3.5. Clasping Coneflower (Dracopis Amplexicaulis) - 6 lbs. (12%)
4. Texas Bluebonnet (Lupinus texensis) Seed (25 Pound bag)
5. Green Milkweed (Asclepias viridis) Seed (25 Pound bag)
6. Pink Evening Primrose (Oenothera speciosa) Seed (25 Pound bag)
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