Jump Start Greenhouse? Grow Tubes For Vines - The "Serious Grower's Choice" for the fastest, balanced vine growth and earlier, sustained harvests. Why Choose Jump Start? There is simply no faster way to get newly planted vines (and orchard trees) established and into production than to shelter them in a greenhouse micro-climate during their first season in the field and there is no better mini-greenhouse than a Jump Start Grow Tube. When time and money matter (and when don't they matter?), Jump Start Grow Tubes from Plantra are the ?Grower?s Choice.? Jump Start grows bigger, healthier vines from the start and it all begins with managing sunlight for optimal photosynthesis. Twin-walled for light diffusion and translucent to the specific sunlight vines need and in the way they need it, Jump Start is packed with advanced greenhouse technology to stimulate the plant?s own phytochrome to grow the whole plant from roots to shoots. Jump Start's "growth maximizing" 3.5 inch tube diameter allows more room for leaves to expand and function at peak performance. Equally important proprietary greenhouse additives filter sunlight to keep temperatures inside the tube safe for healthy plant growth so there's never a concern about too much heat inside or outside the tube. Rigid construction built on a twin-walled foundation with solid side walls stops desiccating winds which can kill young vines. All benefits means bigger, healthier plants for earlier, larger, and sustained harvests. But that's not all. Jump Start also slashes your farming costs. While Jump Start Vine Grow Tubes are busy accelerating growth, they are also reducing your vine and orchard seedling establishment costs and growing your bottom line! The farming cost savings from using Jump Start Grow Tubes once far and away exceed the cost by: Reducing trips to train ? no training necessary while the vine or tree is growing to the top of the tube; Protecting against animal browse until your vines are near the wire or trees are on their way up the stake; Increasing survival rates and virtually eliminating replants; Allowing easy re-use through a side opening slit that allows the grow tube to be removed after vines are trained and tree scaffolds develop. Use Jump Start Grow Tubes on your next planting and get your vines and orchard seedlings off and running with the sun! Product Specifications - Jump Start Greenhouse? Grow Tubes For Vines C-Style Please Note: Vine Grow Tube Shelters Do Not Protect From Frost - Plantra Jump Start Grow Tube Shelters or any other vine grow tubes with an open top are designed for use during the frost-free growing season only and do not protect from frost. Do not use grow tube shelters with the intent to protect young planting stock from frost or to otherwise extend the growing season where frost may occur. Side opening slit allows fast and easy removal for reuse after vines are trained. Tube diameter = 3.5in O.D. Construction = Rigid, twin-walled structure ? ensures efficient sunlight diffusion and rugged structural integrity. Color = ?Plantra Peach? and light diffusing properties for optimal vine growth. Attachment = Large tie holes allow attachment with a variety of tying materials or by threading pencil rod or small diameter bamboo training stakes.