The best season for taking rose cuttings is mid to late summer for most home gardeners. July and August give you the highest chance of success with semi-hardwood stems. This timing works well across most growing zones in the US.
When to take rose cuttings depends on what type of wood you want to use. Summer rose cuttings come from stems that started growing in spring but have now firmed up a bit. These semi-hardwood stems have the right mix of strength and growth energy to root well.
I've tested all three cutting seasons over the years to see what works best. Spring softwood gave me fast roots but many cuttings wilted before they could root. Winter hardwood cuttings took forever and many rotted in the damp soil. Summer semi-hardwood hit the sweet spot with 70% success rates compared to 40% for the others.
Why does summer work so well? Semi-hardwood stems have stored up carbs from months of sun. They also still have active growth hormones flowing through their tissue. This balance helps them survive the stress of losing their roots while they grow new ones.
Iowa State Extension backs up what I found in my own garden. They tell home gardeners to take semi-hardwood cuttings in July and August as the easiest method. The stems have toughened enough to handle the rooting process without turning to mush.
Your rose cutting timing by zone can shift this window a bit. In zones 5 and 6 with cold winters, stick with summer cuttings since you need plants rooted before frost hits. Zones 7 through 10 can also try hardwood cuttings from November to February when plants are dormant.
I've had good luck with winter hardwood in my zone 8 garden when I protect cuttings in a cold frame. But my zone 5 friends get better results staying with the summer window. Know your local frost dates and work backward from there.
Look for stems about as thick as a pencil that bend without snapping. The bark should look green when you scratch it but the wood inside should feel firm. This tells you the stem has reached the right stage for cutting.
Plan your rose cuttings for mid-July through late August in most areas. This gives rooted plants time to settle in before winter comes. Start your prep work in early summer so you're ready when the timing is right.
Read the full article: How to Grow Roses from Cuttings
