Forsythia is a classic shrub that has been around in North America for a long time. They fell out of fashion for a while, but they’re back in style for 2020! Forsythia is fairly easy to care for, as long as you give it a full sun location. They also make great foundational or screening plants, with some varieties reaching heights up to 6′ tall and wide. Besides being reliable and easy to grow, they feature some of the earliest spring color of the year—and these shrubs sure know how to put on a show!
Before the leaves come out in the spring, the long willowy branches of forsythia burst with flowers from top to bottom, similar to Magnolia trees. The flowers are quite small, but their color and abundance are astonishing. Forsythia blossoms are the brightest yellows you’ll see. They practically glow when they’re in full bloom, and can be seen from a long way away. Forsythia branches also make a gorgeous cut flower arrangement if they’re cut and brought indoors just before they bloom.
But, there is one common challenge and frustration that we hear from some people who have forsythia shrubs, which is that their forsythia never blooms. This is because forsythia is a bit of an odd plant.
Technically, most forsythias are winter-hardy to zone 3, so theoretically, they should grow just fine here in Iowa. But the trick is that not all forsythia flower buds are winter-hardy to the same zone as the plant itself. Since the buds for the next year set right after it flowers, they are susceptible to winter damage. For example, Forsythia ‘Lynwood Gold’ is listed as hardy to zone 5, so it should be able to withstand temperatures down to -15º or -20º F, but the flower buds sustain severe damage in weather colder than -7º. This means, upon the arrival of spring, the shrub is left with lots of branches and leaves but will struggle to bloom.
However, don’t lose hope on these stunning golden-yellow shrubs! Lots of work has gone into breeding forsythia varieties that have hardier buds. So, if you want that nearly fluorescent cloud of spring color in your yard, it all comes down to picking the right cultivars.
Here are a few of our favorite varieties of forsythia that should bloom heartily here in Iowa.
Forsythia Northern Sun reaches heights up to 8′ tall. Its golden-yellow blossoms are hardy to temperatures of -20ºF.
Forsythia Northern Gold gets up to 8′ tall as well. Its blooms are a slightly richer gold color than Northern Sun. Its flowers are also hardy to -20ºF.
Forsythia New Hampshire Gold is slightly smaller, reaching up to 5′ tall. Its flowers are a deep yellow, and it’s hardy down to -20ºF as well.
Meadowlark Forsythia is also a bigger variety, reaching up to 8′ tall. It’s even tougher than the rest, with buds that are winter-hardy down to -35ºF. Meadowlark is an excellent choice if you live on the prairie where the winter weather can get especially extreme.
Forsythia is a beautiful addition to any garden. If you’re looking for a forsythia hardy enough to bloom in Iowa, visit our garden center! We’ll make sure you find a variety that will erupt with cheerful yellow blooms year after year.