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PlantFiles: Border Forsythia
Forsythia x intermedia 'Show Off'

Family: Oleaceae (oh-lee-AY-see-ee) (Info)
Genus: Forsythia (for-SITH-ee-a) (Info)
Species: x intermedia (in-ter-MEE-dee-a) (Info)
Cultivar: Show Off
Additional cultivar information: (PP19321; aka Show Off, Mindor)
Hybridized by Davasse; Year of Registration or Introduction: 2005

6 vendors have this plant for sale.

One member has or wants this plant for trade.


4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

4-6 ft. (1.2-1.8 m)

USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Late Winter/Early Spring
Mid Spring


Other details:
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
From semi-hardwood cuttings
From hardwood cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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Thumbnail #1 of Forsythia x intermedia by ShrubSource

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1 positive
No neutrals
1 negative

Gardeners' Notes:

Negative braun06 On Aug 13, 2010, braun06 from Peoria Heights, IL (Zone 5b) wrote:

This forsythia has a nice plant texture and foliage coloration for the genus and a compact habit. It is tough and handles heat or lack of rain quite well. The flowers appear more delicate like that of a cherry tree because of the big size of the blooms. It does bloom from ground to tip on any growth.

I have only one issue that has attacked one of my plants. Stem blight continued to wipe one plant out, branch by branch. Pruning and sanitizing didnt stop it from spreading and taking out branches all the way to the ground. The best thing to do is if you notice a branch wilting remove it and treat it immediately to prevent it from spreading. The plants won't wilt from drought under proper care so if you see wilting, get er done.

Update June 2012* Coming out of a spring some 75% of one shrub was killed to the ground by stem blight. I have noticed that fungus, in general, is a problem in my back yard as it faces south on a hill with a 1' rise at the end of it to go up to an alley. This seems to create a higher humidity environment where I get diseases and severe powdery mildew on plants even in times of drought and low humidity according to the weather service. If you notice signifcant powdery mildew issues on your plants I would recommend against planting this forsythia. I removed all my forsythia to try something hopefully easier.

Positive ShrubSource On Apr 4, 2009, ShrubSource from Zeeland, MI wrote:

Forsythia - Show Off Forsythia

Interested in seeing a stellar fireworks show before the 4th of July? This little beauty will be a blast of early spring color from the ground up! Show Off is not your typical Forsythia! This variety is a vast improvement over all. It has intense yellow flowers, dark green foliage, with a round and compact form, so there is no need to prune. Older varieties can become out of control and often become victims of pruning. Now you can have your hedge - tight and compact the way you want it without doing any work. Show off your colors with Show Off, an abundant of large golden-yellow showy flowers. It will just put a smile on your face.


This plant has been said to grow in the following regions:

Elburn, Illinois
Peoria, Illinois
East Port Orchard, Washington

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