Niobe Golden Weeping Willow: Growth Rate and Care, Year by Year

If you’re thinking about planting a Niobe Golden Weeping Willow — or you just put one in and you’re wondering how fast it will take off — here’s everything I’ve learned growing one in our yard here in Neenah, WI. The short version: this is one of the fastest-growing shade trees you can plant, with gorgeous golden-green weeping branches, but those same fast roots mean where you plant it matters a lot.

How fast does a Niobe Golden Weeping Willow grow?

Fast — faster than almost anything else you’d plant for shade. A healthy Niobe willow typically puts on three to four feet of growth a year, and in good, moist soil a young tree can push even more than that in a single season. They reach a mature height of roughly 30 to 50 feet with a spread nearly as wide, and they get most of the way there in well under a decade. If you want a yard to feel established quickly, few trees deliver like this one.

What to expect, year by year

• Year 1: A new whip or small tree spends a lot of its energy below ground, establishing roots. You’ll see some top growth, but the first year is mostly about settling in. Keep it well watered.
• Years 2–3: This is when it takes off. Once the roots are established, the top growth really accelerates — several feet a year — and the weeping form starts to show. By the end of year three you have an unmistakable young willow, not a stick.
• Year 5: You’re looking at a substantial tree, often 15–25 feet tall with a full, draping canopy. By this point ours had become one of the biggest features in the yard — faster than I expected.
• Mature: Settling toward 30–50 feet tall and wide, with the classic golden weeping silhouette.

How to care for it

• Sun: Full sun. It wants all the light it can get.
• Water: Loves moisture. Willows are happiest with consistent water and tolerate damp, low spots where other trees would sulk. Water a young one generously its first couple of seasons.
• Soil: Not fussy — it handles most soils as long as there’s enough moisture.
• Hardiness: Comfortable in USDA zones 4–8, so it sails through Wisconsin winters.
• Pruning: Prune in late winter while dormant to shape it and clear any damaged wood.

Where NOT to plant it (this part matters)

The same vigor that makes a willow grow fast makes its roots aggressive and water-seeking. Keep it well away — at least 35 to 50 feet — from your septic system, sewer and water lines, foundation, and underground pipes. Willow roots will find moisture and can get into drain lines. Give it room in an open part of the yard, ideally a spot that stays a little damp, and it’ll reward you. Plant it next to the house or over the septic field and you’ll regret it.

The honest downsides

Fast-growing trees trade longevity for speed — willows tend to live 30 to 50 years rather than centuries, and the soft, fast wood can drop small twigs and branches, especially after a storm. They’re a little messy. But for quick shade, dramatic year-round looks (the golden branches are especially striking in winter), and a tree that genuinely transforms a yard in a few seasons, the Niobe is hard to beat.

Ours has been one of the best, fastest-rewarding things we’ve planted. If you’ve got the open space and you keep it away from your pipes, I’d recommend it.

— Jamie Dolan, Neenah, WI