The date that governs the whole schedule
Bozeman averages about 118 frost free days. First fall frost typically arrives around the middle of September. Frost risk begins in the first week of September and by the end of the month it is close to certain.
Every other date on a late season site plan is derived from that one. Not from the contract completion date, not from when the vertical trades clear out, and not from when landscaping finally gets released. From the frost date, working backward.
This is the part that gets missed, and it gets missed for a structural reason rather than a careless one. Site finishes are bid last, awarded last and mobilized last, which means the trade with the least schedule flexibility of any on the job routinely arrives with the least schedule left.
Working backward
Turf establishment. Seed wants to germinate and grow for a few weeks before hard frost. Count back from mid September and the practical deadline for reliable establishment on most sites is late in the first week of September. Past that, the honest answer is dormant seeding with cover, which stabilizes the site but does not produce turf this year.
Irrigation. A system has to be pressurized and running to establish anything, and then it has to be blown out before hard freeze. That gives a narrow band in which the system must be complete, tested and commissioned. If the water source is not live, that band closes. On more than one late season job the schedule has not been lost to weather, it has been lost to a meter that was not set.
Topsoil and finish grade. Placing material requires workable ground, meaning neither frozen nor saturated. September in this valley can deliver both in the same week. Finish grade also has to be signed off before turf goes anywhere, and grade corrections after seeding cost the seeding.
Hardscape and base. Base preparation depends on compaction, and compaction depends on moisture content and temperature. There is a date past which the honest statement is that it can be built and it will not be as good, and knowing where that date is matters more than pushing past it.
The order that cannot be reordered
Grade before soil. Soil before irrigation. Irrigation before turf. Turf before it freezes.
Every one of those dependencies is one directional. None can be run in parallel to buy time. This is why compressing a site finish does not work the way compressing other trades sometimes does, and why the answer to can you throw more crews at it is often no, not usefully.
What can be compressed is the decision time in front of the work, and that is almost always where the recoverable weeks actually are.
Three decisions that need to happen in the next two weeks
One. What happens to the topsoil. Montana requires screened topsoil in the top layer of a finished site. There are three ways to handle that and they do not cost the same. You can haul the stripped material off and haul finished material back in, which means paying for trucking twice and paying for a product you already owned. You can import everything and skip the export, which is one truck bill instead of two. Or you can screen on site, staging only what the site actually needs, with no haul out and no haul in and no stockpile sitting in the middle of everyone else's work.
That decision is made at stripping, not at finishes. By the time it is a landscaping question it has already been decided for you, usually the expensive way.
Two. Whether irrigation water will be available. Meter, tap, backflow, power to the controller. Any one of them missing on the day irrigation is scheduled removes turf establishment from this year's scope. This is a coordination question, not a landscaping question, which is exactly why it goes unowned.
Three. Whether sleeving is in. Every crossing under paving, curb or walk. If concrete is poured over an unsleeved crossing, the fix is saw cutting and patching a surface that was just accepted, at a cost several multiples of the sleeve, and in front of the owner.
If you are not going to make it, decide that now rather than in October
There is a version of a late season site that is planned as a winter carry and it is a perfectly good outcome. Stabilize the site for the winter, satisfy the stabilization obligations that do not pause for weather, protect the grades you have paid for, and program establishment for spring under a schedule that is not being run by the weather.
That is a materially better result than seeding into cold ground in the second week of October, watching it fail, and discovering it in April when the punch list you thought was closed reopens on a property that is already occupied.
The difference between those two outcomes is not skill. It is whether the call was made in August or in October.
What we need to price a late season finish
- Current drawings, including civil, and the grading plan as it actually stands rather than as issued
- Target mobilization date and the real completion date, meaning the one the owner is holding you to
- What was decided about the stripped topsoil, and where it is now
- Water source status: meter, tap, backflow and power
- Which crossings are already poured
Send that and you get a preliminary budget and a sequenced date back, including the honest version if the honest version is that part of it should carry to spring.
Send us your drawings. Get a preliminary budget and a sequenced schedule back, including a straight answer on what will and will not finish this year.