Why are some flowers called weeds, while others are desirable plants? A plant's behavior is as important as its appearance when it comes to answering this question. Plants that grow and reproduce too rapidly are becoming a serious problem. The following list contains plants that are invasive in Pennsylvania.
Invasive plants are typically non-native plants that reproduce rapidly. They often choke out or eliminate other plants. Often they will grow in many different ecological niches, especially in disturbed sites. Most invasive plants are poor food and habitat sources for wildlife.
Sometimes a plant will show its invasive nature by spreading over, under, through, and into every possible space it can find. In these cases it is easy to identify it as an invasive plant. In other cases a plant may be more subtle. Burning bushes, privets, and amur honeysuckles look completely harmless in the landscape, yet if you check in nearby fields or forests you’ll find countless seedlings. Getting a professional opinion or checking a government list of invasive plants (available through the DCNR) is the best method to determine if a plant is invasive or not.
If you have any questions about invasive plants just ask us the next time you're at the nursery. Our goal is to provide ecologically safe and responsible plants for our customers.
Sources: Compiled from experience, information from the Pennsylvania Certified Horticulturist Reference Guide, and
Mutianyu Great Wall is located in Huairou County about 45 miles from Beijing, Mutianyu Great Wall enjoys a long history and is part of the glorious culture of China. It connects Juyongguan Pass in the west and Gubeikou Great Wall in the east. The wall was first built in Northern Qi Dynasty (550 - 557).
In Ming Dynasty (1368 - 1644), Tan Lun and Qi Jiguang, two famous patriotic generals, rebuilt it in order to strengthen its defensive potential when they guarded the strategic pass. It served as the northern protective screen, guarding the capital and imperial mausoleums for generations.
Mutianyu Great Wall winds 1.4 miles through lofty mountains and high ridges, many sections of which are made of granite. The unique structure makes the wall almost indestructible. It measures 23 to 26 feet high and four to five yards wide. Both of the wall's inner and outer sides have parapets to defend against enemies coming from the two sides. Some parapets are saw- tooth shaped instead of the regular rectangular form. Below the parapets, there are square embrasures the top of which are designed in an arc structure, different from the traditional round embrasures.
There are 22 watch towers distributed at close intervals along the wall. They are located not only in the main wall but also at the distinctive 'branch cities'. Branch cities are built on the hill ridge against the inner or outer side of the wall. They measure from several yards to dozens of yards across. On the northwest over 3,281-feet hills, lies a section of the wall called 'Ox Horn Edge'. On the steep and lofty peaks, there are two walls named 'Flying Eagle Flies Facing Upward' and 'Arrow Lock'. What is more rarely seen on the southeast side is a general gateway platform guarded by three watch towers together. In locations of strategic importance, batteries are set up to reinforce the defense capabilities. Mutianyu Great Wall really deserves to be the archetype of the ten thousand li Great Wall.
Besides its strategically important location and compact layout, the Mutianyu Great Wall is also famous for the breath-takingly beautiful scenery. Woods cover over ninety-six percent of the total scenic area. The wall presents different aspects of beauty in the four seasons. Flowers bloom all over the mountains in spring. Grasses dress the hillside green in summer.
Trees are laden with sweet fruits in autumn, and especially in October, leaves are turning red or yellow, touching the mountain tops with gold. In winter, the wall is covered by snow, making it seem more magnificent. The pine trees around Mutianyu Great Wall are well-known. There are more than 20 pines over 300 years old and about 200 pines over 100 year old. Besides, spring water at the foot of the wall tastes pure and fragrant, much appreciated by visitors.
What's more, the national first-rate cable car is installed in Mutianyu Great Wall. A sled named 'Speed' will give you an opportunity to experience thrills by taking you swoop down from the high mountains. China Stone City collects weird and beautiful stones, attracting more and more visitors to come and see.
Visit the underground palace in the Ming Tombs (Dingling), then enjoy the most beautiful & green section of the Great Wall, return to downtown. Departure: daily.
Not have much leisure time, but eager to catch the highlights of Beijing, join this, enjoy the three most popular scenic spots in a one-day bus tour. Departure: daily.
With the best scenery & precipitous topography, Mutianyu Great Wall is remarkable place for sightseeing, hiking and exploration. Departure: daily.
This half day private tour covers the trip to Mutianyu Great Wall, the most beautiful and green section of the Great Wall in Beijing, enjoy your own car or van with your own tour guide and driver.
The private tour covers the trip to Mutianyu Great Wall, Temple of Heaven and have a short exterior visit to the Birds Nest, water cube - the main Olympic Stadium now being built for the 2008 Olympic Games., enjoy your own car or van with your own tour guide and driver.
The private tour covers the trip to Mutianyu Great Wall, Summer Palace and have a short exterior visit to the Birds Nest, water cube - the main Olympic Stadium now being built for the 2008 Olympic Games., enjoy your own car or van with your own tour guide and driver.
Visit the world famous Mutianyu Great Wall, the most beautiful and green section of the Great Wall in Beijing, and Ming Tombs (Changling).
2-day small group tour package including: Mutianyu Great Wall, Ming tombs (Dingling), Tiananmen Square, Forbidden City, Temple of Heaven, Summer Palace. Real discount, reduce your tour cost.
The private tour covers the trip to Mutianyu Great Wall and Ming Tombs (Dingling-the Underground Palace), enjoy your own car or van with your own tour guide and driver.
This is the good choice of Great Wall fans, one day tour covers the sights of Badaling Great Wall and Mutianyu Great Wall.
No shopping stop, more time in the beautiful Mutianyu Great Wall, the most beautiful and green section of the Great Wall in Beijing, enjoy your own car or van with your own tour guide and driver.
The 2-day private tour package covers the trip to the attractions: Mutianyu Great Wall, Tiananmen Square, Forbidden City, Old Beijing Hutong, Beihai Park, Shichahai and Temple of Heaven.
The 2-day private tour package covers the trip to the attractions: Mutianyu Great Wall, Summer Palace, Tiananmen Square, Forbidden City (including the Hall of Clocks and Watches and the Treasure Hall). and Temple of Heaven.
The 2-day private tour package covers the trip to the attractions: Mutianyu Great Wall, Summer Palace, Tiananmen Square, Forbidden City and Temple of Heaven.
The 2-day private tour package covers the trip to the attractions: Mutianyu Great Wall, Ming Tombs (Dingling), Tiananmen Square, Forbidden City, Temple of Heaven and Summer Palace.
3-day private tour package covers airport transfer and the trip to the attractions: Mutianyu Great Wall, Summer Palace, Temple of Heaven, Tiananmen Square and Forbidden City.
3-day private tour package covers airport transfer & the trip to the attractions: Mutianyu Great Wall, Ming Tombs (Dingling), Summer Palace, Tiananmen Square, Forbidden City, Temple of Heaven, Summer Palace, Hutong Tour and Beijing Zoo Panda.
4-day private tour package covers airport transfer & the trip to the attractions: Tiananmen Square, Forbidden City, Temple of Heaven, Summer Palace, Mutianyu Great Wall and Hutong Tour.
4-day private tour package covers airport transfer & the trip to the attractions: Tiananmen Square, Forbidden City, Temple of Heaven, Mutianyu Great Wall, Hutong Tour, Ming Tombs (Dingling) and Summer Palace.
5-day private tour package covers airport transfer & the trip to the attractions: Tiananmen Square, Forbidden City, Shichahai Hutong, Opium Street, Drum Tower, Old Beijing Hutong, Mutianyu Great Wall, Ming Tombs, Summer Palace, Capital Museum & Temple of Heaven.
See Giant panda. Take a pedicab to visit a hutong to explore the real life of ordinary people in Beijing, and visit the famous Lama Temple and Olympic Stadiums. Departure: daily.
1. Pick up at your hotel between 7:00am and 7:30am.This tour starts at northern part of Tiananmen Square. Seeing the Tian'anmen Rostrum, it is the symbol of new China. You could see two pairs of 600 years old stone lions, the ornamental columns, the outer golden water bridge and so on. Besides, having chance to view all constructions from distance. Such as the National Flag Pole, the Monument to the People's Hero, the Chairman Mao Zedong Memorial Hall, the Great Hall of People, and the National Museum.
2. Then proceed to the Forbidden City, the largest and best-preserved ancient imperial palaces group with 500 years history in the world. Visit the Forbidden City along the central axis from south to north for 2 hours.
3. After visiting the Forbidden City, shopping at a Jade Carving Factory for 45 minutes.The jade carving is very famous special local product, it was not only the excellent skill on carving, but also mixes many Chinese traditional cultures in the jade carving.
4. After lunch, visiting Mutianyu Great Wall about 2 hours. Mutianyu Great Wall is known for its beautiful surroundings - dense woods and rich pastures changing colors with the seasons of a year. If you want to reach the highest point, cable car is a good choice (optional).
5. Finally, you are returned to the downtown and will have a chance to enjoy the Chinese traditional medicine culture.
2. You are also welcome to call us. If you have a last minute booking or an urgent matter after our normal office hour, please call 86 18600365585 ( 24 hours ).
3. The tour doesn't need the pre-payment and deposit require, the tour guide will pick-up you from the hotel, the payment charge can be settled directly to the local tour guide in cash when you arrive. Both RMB and hard currency are acceptable.
4. Child definition: from age 3 to 11 years, contact our trip advisors for the actual discount for your kids, under 2 years old free, 12 years old and above will be charged as Adult Price.
If you prefer a private tour of the same attractions, you may take our Beijing Private Tours for a little extra cost (or for an additional cost), or tailor-made your trip.
< We recommend you to join below tour line after the tour to the main characteristic landscape of Beijing if you have 2 days vocation. See Giant panda, take a pedicab to visit a hutong to explore the real life of ordinary people in Beijing within 2 days.
< If you have some free time in the evening, you are kindly advised to join some of the Beijing night shows or night tours below to supplement your daytime activity.