701.1 General Description
This work includes preparing the ground, furnishing and planting wildflower and companion grass seeds, applying fertilizer, and applying lime, if necessary, to areas designated on the plans.
701.1.01 Definitions
General Provisions 101 through 150.
701.1.02 Related References
A. Standard Specifications Section 882—Lime Section 890—Seed and Sod Section 891—Fertilizers B. Referenced Documents General Provisions 101 through 150.
701.1.03 Submittals
General Provisions 101 through 150.
701.2 Materials
A. General Use materials that meet the requirements of the following specifications: Material Specification Agricultural Lime 882.2.01 Companion Grass Seed 890.2.01 Fertilizers 891.2.01 B. Wildflower Seed Use seed from the latest season’s crop. Use seed that meets the minimum germination rates listed in the Wildflower Seeding Table with 98 percent seed purity and 0.5 percent weed seed. Proportion seed mixture according to the Wildflower Seeding Table. WILDFLOWER SEEDING TABLE Approx. % by Weight Botanical Name Common Name % Germinantion 1.5 Achillea millefolium White Yarrow 50 5.0 Centaurea cyanus Cornflower 60 5.0 Chamecrista fasicu lata Partridge Pea N/A Approx. % by Weight Botanical Name Common Name % Germinantion 10.0 Coreopsis lanceolata Lance-leaved Coreopsis 40 10.0 Coreopsis tinctoria Plains Coreopsis 65 5.0 Delphinium ajacis Rocket Larkspur 60 5.0 Escholzia californica California Poppy 60 5.0 Gaillardia aristata Perennial Gaillardia 45 10.0 Gaillardia pulchella Annual Gaillardia 45 2.5 Monarda citriodora Lemon Mint 40 10.0 Nemonphila men ziesii Baby Blue Eyes 70 1.0 Oenothera speciosa Pink Primrose N/A 2.0 Papaver rhoeas Corn Poppy 60 10.0 Rubeckia hirta Black-Eyed Susan 60 5.0 Salvia farinacea Blue Sage 40 3.0 Solidago spp. Goldenrod N/A 10.0 Trifolium incarnatum Crimson Clover 80 100% total mixplant at a rate of 12 lbs./acre (13 kg/ha) C. Companion Grass Apply nurse or companion grass as follows: Planting Season Grass Rate per Acre (Hectare) October 1 to February 28 Tall Fescue 5 lbs (5.5 kg) D. Fertilizer Mixed Grade Select fertilizer mixed grade such as 10-10-10, 6-12-12, 5-10-15, or any other analysis within the following limits: • Nitrogen 5 to 10 percent, phosphorus 10 to 15 percent, and potassium 10 to 15 percent
701.2.01 Storage, Delivery, and Handling
Use seed delivered in original sealed packages bearing the producer’s guaranteed analysis for percentages of species mixture, minimum germination rates, and purity of seed.
701.3 Construction Requirements
701.3.01 Personnel
General Provisions 101 through 150.
701.3.02 Equipment
Use approved mechanical seed drills, drop spreaders, and rotary spreaders to distribute seed.
701.3.03 Preparation
A. Planting Limits Before preparing the ground, stake planting limits according to the plans and as approved by the Engineer.
701.3.04 Fabrication
General Provisions 101 through 150.
701.3.05 Construction
A. Ground Preparation Prepare the ground as follows: 1. Plow between 4 in. to 6 in. (100 mm to 150 mm) deep. 2. After plowing, thoroughly disk the area until pulverized, then smooth the surface. 3. Remove large clods, boulders, stumps, rocks, and other foreign particles that will interfere with the work and seedling growth. 4. Wait 2 weeks after preparation, then spray new growth with 1 gal per acre (9 L per hectare) of Roundup™ herbicide. 5. Wait at least 10 days before proceeding. B. Application of Lime and Fertilizer Mixed Grade Apply lime and fertilizer as follows: 1. Lime Uniformly spread agricultural lime on the ground at the approximate rate determined by the Engineer. If the pH is 6.0 or higher, no lime is required. 2. Fertilizer Mixed Grade Spread the fertilizer, mixed according to Subsection 701.2.D, uniformly over the ground at approximately 200 lbs./acre (225 kg/ha). 3. Mixing Before doing further work on the area, blend the lime and fertilizer uniformly into the top 4 in. (100 mm) of soil using harrows, rotary tillers, and other equipment approved by the Engineer. C. Seeding Weather permitting, sow seed within 24 hours of applying the fertilizer and lime to the seed bed as follows: 1. Sow seed uniformly according to the rate specified in Subsection 701.2.B. Use approved mechanical seed drills or mix seed with dry sand and spread it with either a drop spreader or rotary spreader. 2. Cover the seed to no more than 1/8 in. (3 mm) deep. 3. After seeding, roll the area with a cultipacker or similar equipment to ensure good soil contact for seedling germination. D. Mulching After rolling the seed bed, apply 1 ton per acre (2 Mg per hectare) of wood fiber mulch.
701.3.06 Quality Acceptance
A. Replanting The Engineer may require replanting an area that shows unsatisfactory growth. Except as otherwise specified by the Engineer, prepare replanting areas the same as the initial planting with the following exception: • Use a soil test or the Engineer’s guidance to determine the fertilizer type and application rate, then furnish and apply the fertilizer. B. Providing Growth and Coverage Ensure that wildflower growth and coverage conforms with the intent of the Contract for the vegetation, except for seed not expected to germinate and show growth at that time. Ensure that vegetation shows a satisfactory visible growth with no bare spots larger than 1 ft.² (0.1 m²). Bare spots shall be infrequent, comprising no more than 1 percent of a given area.
701.3.07 Contractor Warranty and Maintenance
A. Plant Establishment Preserve, protect, water, reseed or replant, and perform other work as necessary to keep the wildflower areas in satisfactory condition. B. Watering Keep planted areas moist for 4 to 6 weeks during seedling germination and development. Following initial growth, water the wildflower areas enough to promote maximum growth. C. Mowing Mow once a year in late fall after seedheads have matured. Avoid damaging desirable vegetation.
701.4 Measurement
A. Wildflower Seeding The number of acres (hectares) completed according to the above requirements and accepted by the Engineer is measured for payment. B. Wood Fiber Mulch Mulch furnished and applied is not measured separately. C. Water Water furnished and applied to promote a satisfactory growth is not measured for payment. D. Agricultural Lime Lime is measured by the ton (megagram). E. Mixed Grade Fertilizer Fertilizer is measured by the pound (kilogram).
701.4.01 Limits
Work required under Subsection 701.3.06 and Subsection 701.3.07 is not measured for payment.
701.5 Payment
Wildflower seeded areas will be paid for as follows: A. Wildflower Seeding When plants are satisfactorily planted, 80 percent of the Contract Unit Price bid per acre (hectare) will be paid on the next estimate. Until Final Acceptance, perform required maintenance according to Subsection 701.3.07 when necessary or as ordered by the Engineer. At Final Acceptance, the remaining 20 percent will be paid. Payment is full compensation for preparing ground, providing wildflower and companion grass seed, applying seed, watering, mulching, and establishing plants. B. Mixed Grade Fertilizer Fertilizer will be paid for at the Contract Price per pound (kilogram). Payment is full compensation for furnishing and applying the material. C. Lime Lime will be paid for at the Contract Price per ton (megagram). Payment is full compensation for furnishing and applying the material. Payment will be made under: Item No. 701 Wildflower seeding Per acre (hectare) Item No. 701 Fertilizer mixed grade Per pound (kilogram) Item No. 701 Agricultural lime Per ton (megagram)
701.5.01 Adjustments
General Provisions 101 through 150.
Wildflower Seeding in other states
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