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Dr Ian Plummer

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Lawn Care
Specification for a Croquet Lawn

To be constructed as per a bowling green.

Playing area: 32 x 25.6 m. (35 x 28 yards) minimum.

Extended playing area: 33.8 x 27.4 m. (37 x 30 yards) minimum.


  1. Agreement to return to original condition any previously grassed areas or tracks and paths, damaged in order to obtain access to site of work.

  2. No work shall be proceeded with if, in the opinion of the client, the ground is so affected by bad weather that to continue work would be detrimental to the soil condition.

  3. Each phase of the work must be offered for inspection before being covered up by the next operation.

  4. Appropriate hand or small machines operations are to be allowed for on areas too small for tractor work.

  5. All rubbish, stones, weed roots, and other debris collected during the work must be removed completely off the site.

  6. The operations set out give the contractor the opportunity to price for and to carry out a satisfactory job. Any diversions from these operations must be guaranteed to give similar satisfactory result and will only be permitted after consultation with the client.

  7. All seeding must be carried out during the appropriate weather conditions, as agreed by the client.

  8. All equipment must be agreed with the client.


Crosswise represents one time.
  1. Remove all topsoil and store ready for returning to site.

  2. Grade subsoils to levels as indicated in figure 1a, 1b or 1c, as appropriate to the site.

    soil strata clicnker base
    Figure 1a

    soil strata top soil filled
    Figure 1b

    soil strata sand filled
    Figure 1c

  3. Break up sub-soil pan by drawing sub-soiling implement in both directions at 1-2m intervals.

  4. Install water irrigation pipes as indicated in and to the specifications of drawing (dependant on local supply source).

  5. Install a main drainage system as indicated in figure 2.

    drain layoutFigure 2.

    The depth of main drains will be a minimum depth of 450 mm. (18") below the top surface (100 mm. (4") below the base), unless otherwise indicated.

  6. Construct catchment pit and inspection chamber in the positions and to the specifications as indicated in figure 2.

  7. Install lateral drains at 6 m. (6.5 yd.) centres, as indicated on figure 2. All lateral drains must be let into the sub strata 100 mm. (4") at the higher end, falling in their extremities to the main drain.

  8. All main drain pipes must be laid to a constant fall (1:80 to 1:120), and the drain runs must be kept to a minimum width unless otherwise indicated on the drawings. Unless otherwise stated all drains will be perforated plastic drain tubes. (Over 37 yards a fall of 1:80 = 362mm, 1:120 = 308mm).

  9. Surmount all drains with 9 mm. (3/8") washed gravel or clean stone to level base, as indicated in figure 1.

  10. After firming, cover base with 150 mm. (6") of 25 mm. to 14 mm. (1" to 0.5") of clinker or angular stone. During construction of base each 50 mm. (2") layer must be consolidated individually to a true level.

  11. Cover base to an even thickness of 25 mm. (1") of fine ash or agreed equivalent.

  12. On completion of all drainage work remove all spoil completely from site.

  13. Return top soil, over ash layer, to an even thickness of 200 mm. (8"). Each 50 mm. (2") layer of the top soil must be consolidated individually to a true level. True level not more than 3 mm. under 3 m. straight edge. All stones to be removed.

  14. Grade by a ridge bar grader, or other approved implement, to remove dips, hollows, ridges, mounds etc. 4 times in two directions crosswise to produce a smooth, level and even surface.

Note: Where due to weather or other conditions, a contract is not able to be completed at once, the contractor may be required to give periodical attention to prevent weed growth. Attention will be drawn to this point in cases where it arises.


  1. Light harrow and flat roll alternatively 2 times in two directions crosswise, to produce a level, fine, smooth formed seed bed.

  2. Collect all surface stones exceeding 10 mm. (1/2") in any direction and cart away from site.

  3. Collect and remove from site all perennial weed roots.

  4. Apply the appropriate pre-seeding fertiliser for the time of year, or its equivalent which must be approved by the client. The application rate to be that indicated by the manufacturers. (For example Fisons PS5 pre-seed fertiliser at 2oz per yard or 50 grams per square meter, or 5-10 grams sulphate of ammonia, 30 grams superphosphate or lime and 15 grams of sulphate of potash per square metre.)

  5. Sow the specified grass seed at the prescribed rate using an efficient seed broadcaster. The seed quantity must be halved and applied in two equal sowings in transverse directions. (Grass seed mixture: 80% Chewings Fescue (Koket) with 20% Browntop Bent (Highland). Alternatively Carter's Hurlingham Mix. Grass seed can be treated with bird repellant.)

  6. Lightly harrow the seed 2 times in two directions crosswise into the immediate surface.

  7. Collect and remove from the site all surface stones exceeding 10 mm. in any direction and any other rubbish arising as a result of this harrowing.

  8. Finally roll 2 times with a light flat roller.


  1. The contractor will be responsible for the maintenance of the whole area up to and including the six satisfactory mowings of the grass at intervals of seven days which must take place at times agreed with the client. (6 - 12 months depending on season.) It must be born in mind that the grass may need cutting a number of times before a satisfactory mowing is obtained.

  2. Remove unwanted grasses by hand.

  3. Roll with a flat roller and after the grass retains the vertical mow to 0.5". All long cut material and surface stones exceeding 10 mm. in any dimension are to be cleared off.


  1. The grass may need treating with fertiliser, selective weedkiller, etc. before it is suitable; therefore, the contractor must include a sum in the tender price for work deviation, due to weather or site conditions. In order to receive payment the contractor must receive the approval of the client. The contractor will not be entitled to payment unless additional work agreed with the client has been carried out.


  1. All seeded areas will normally be taken over for maintenance upon completion of six satisfactory mowings of the grass, except that the contractor may be required to renovate bare or thin areas. The final cut being 12 mm. (0.5") with a cylinder mower.

  2. The final surface is to be 'weed-free'.

  3. It is the responsibility of the contractor to draw attention to completion and ask for take-over.

  4. The bases of trees and boarders must be free of weeds and grasses at the time of take-over; therefore, in the event of a total planting not being completed the contractor is responsible for the entire maintenance of the planting.

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Updated 28.i.16
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