Weeds


In the past I have laughed about Ian having crawled on hands and knees over the whole 10 acres rooting out the dreaded khaki weed. Now I understand that it can take this kind of persistence to eradicate many weeds. I have more recently joined the weed brigade and developed beady eyes for certain types. It can be tricky identifying weeds from the good plants to begin with. When we would go out weeding together I must have asked Ian a thousand times about whether it was safe to pull up something or not. I gradually came to distinguish weeds and to identify them even when they were tiny (and looked dissimilar to the mature weed). Sometimes photos and descriptions are not conclusive enough to the beginning gardener. I started by giving some weeds my own name e.g. ‘the bulldog’ because it was so tough to pull out. Sometimes Ian will still spray an area that has been overrun with weeds but more and more we are containing the weeds by digging or hand-pulling. Even though I once would not have believed it, there can be a lot of satisfaction in tracing a vine back to the soil and thoroughly  pulling out the long root!

Ian has already removed:

Camphor Laurel (Cinnamomum camphora) China, Japan, Taiwan

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=T01

Prickly Pear (common) (Opuntia stricta) Carribean

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=S12

Fireweed (Senecio madagascariensis) South Africa

http://www.weeds.gov.au/cgi-bin/weeddetails.pl?taxon_id=2624

Slide9

Khaki Weed (Alternanthera pungens) South America

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=H79

Lantana (Lantana camara)

http://www.weeds.org.au/WoNS/lantana/

Blackberry (Rubus fruticosis) Europe

http://www.weeds.org.au/WoNS/blackberry/

Fishbone Fern (Nephrolepis cordifolia)

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=H04

 

The three most virulent vines which require  constant monitoring are:

Climbing Asparagus Fern (Asparagus africanus)

http://www.moggillcreek.org/media/docs/weeds/asparagus_fern.pdf

(large ones have to be dug out to reach the crown, very heavy work)

Glycine (Neonotonia wightii)

http://www.moggillcreek.org/media/docs/weeds/glycine.pdf

Balloon Vine (Cardiospermum grandiflorum)

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=V01

These three vines are followed closely by:

Chinese Elm (Celtis sinensis)

http://www.moggillcreek.org/media/docs/weeds/chinese_elm.pdf


Ongoing eradication:

Cadaghi (Corymbia torelliana) North Qld

http://www.weeds.org.au/cgibin/weedident.cgitpl=plant.tpl&state=&s=&ibra=all&card=T42

Six of these are removed by an arborist in May 2012 however there are still another six to go. 

Castor Oil Plants (Ricinus communis) Africa and Eurasia

http://www.flickr.com/photos/thetannykid/397579280/in/set-72157608784051589

Blue Billy Goat Weed (Ageratum houstonianum)

http://www.flickr.com/photos/thetannykid/1346690926/in/set-72157608784051589

Queen Palm, Cocos Palm (Syagrus romanzoffiana)

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=T22

All six of these palms are removed in May, 2012.

Wandering Jew ( Tradescantia fluminensis) South America

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=H95 

Cobbler’s Pegs (Bidens pilosa) Europe

http://www.strathfield.nsw.gov.au/system/files/f2/f36/f37/o457//WEED%20INFORMATION

%20SHEET%20-%20Cobbler’s%20Pegs.pdf

Umbrella Tree (Schefflera actinophylla) North Qld

http://www.dpi.qld.gov.au/documents/Biosecurity_EnvironmentalPests/IPA-Umbrella-Plant-PP96.pdf

Scotch Thistle (Onopordum acanthium) Europe, Asia., Asia Minor

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=H21

(in the front paddock)

Murraya , Mock Orange (Murraya paniculata) Asia, Melasia, Northern Australia

http://www.weeds.org.au/cgibin/weedident.cgi?tpl=plant.tpl&ibra=all&card=S44

Thickhead (Crassocephalum crepidioides) Africa

http://keys.trin.org.au:8080/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Crassocephalum_crepidioides.htm

Guava (Psidium guajava and P. guineense) America, Brazil (2 types)

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=E22

African Tulip Tree (Spathodea campanulata) Africa

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=T49

Caltrop / Bindii (Tribulus terrestris) Mediterranean

http://www.weeds.org.au/cgibin/weedident.cgi?tpl=plant.tpl&ibra=all&card=H64

Easter Cassia (Senna pendula var. glabrata)

http://www.dpi.qld.gov.au/documents/Biosecurity_EnvironmentalPests/IPA-Easter-Cassia-PP79.pdf

Duranta/ Geisha Girl (Duranta erecta) Both Americas

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=S43

Ochna (Ochna serrulata) (Mickey Mouse plant)

http://www.moggillcreek.org/media/docs/weeds/ochna.pdf ochna serrulata


Drunken Parrot Tree/Tree fuschia/Boer Bean ( Schotia brachypetala) South Africa

http://www.weeds.mangrovemountain.net/data/Schotia%20brachypetala%20-%20Drunken%20Parrot%20tree.pdf

Golden Rain Tree (Koelreuteria elegans supsp. formosana) Tropical Asia

http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&ibra=all&card=T23

Common Sida, Sida-retusa, Paddy’s Lucerne (Sida rhombifolia) World-wide, cosmopolitan

http://keys.lucidcentral.org/keys/v3/UQCentenary/key/UQ_Centenary/Media/Html/sidarhombifolia.htm

Corky Passion Vine (Passiflora suberosa) Tropical America

http://www.sown.com.au/01_cms/details_pop.asp?ID=802

Stinking Roger  (Tagetes minuta) South America

http://keys.lucidcentral.org/keys/v3/UQCentenary/key/UQ_Centenary/Media/Html/tagetesminuta.htm

Blackberry Nightshade (Solanum nigrum) Europe, Asia and northern Africa

http://keys.lucidcentral.org/keys/v3/UQCentenary/key/UQ_Centenary/Media/Html/solanumnigrum.htm

Brazilian Nightshade (Solanum seaforthianum)

http://weeds.brisbane.qld.gov.au/weeds/brazilian-nightshade

Brazilian Nightshade

Brazilian Nightshade

Flaxleaf Fleabane (Conyza bonariensis) North America

http://www.iewf.org/weedid/Conyza_bonariensis.htm

Broad-leaf Pepper Tree (Schinus terebinthifolius) Brazil

http://www.dpi.qld.gov.au/4790_7160.htm

In  May 2012 we arrange for an arborist to remove the two we have on the driveway.

Honey Locust (Gleditsia triacanthos) Eastern and central North America – one in in centre of lawn circle

Horned Melon (Cucumis metuliferus) Africa

http://informedfarmers.com/horned-melon/

Not listed as a weed at                                                                                         http://www.dpi.qld.gov.au  or                                                                         http://www.weeds.org.au  or                          http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Index.htm

Unfortunately in March 2012, Ian finds Dutchman’s Pipe for the first time (Aristolochia spp. other than native species – from Brazil) as well as Singapore Daisy (Sphagneticola trilobata – from Tropical America) along the river’s edge which seems to suggest they arrived here due to the flood from somewhere upstream.

http://www.dpi.qld.gov.au/4790_7251.htm

http://www.dpi.qld.gov.au/documents/Biosecurity_EnvironmentalPests/IPA-Singapore-Daisy-PP92.pdf

After the 2011 floods the first tips to come through the mud by the hundreds were new Chinese Elms as well as dozens of  castor oil plants. Next, a host of glycine started appearing especially on the rims or knobs of  the eroded bank.  As the grass returned the search for glycine continued as we slashed the grass by hand around dozens of new plants to allow the plants to breathe. At least after the flood the soil released the roots of the weeds quite easily. At this point the climbing asparagus fern started to emerge. Where there had been old vines small fluffy heads of asparagus pushed up through the soil. We needed to use hand trowels to be certain of getting the entire roots. An occasional deep-rooted old vine would be found flourishing under grass and debris. If Ian was not there to help I developed a pink string system – I would tie enormous bows of pink around this vine so that later Ian could readily find and dig them out.  Last of all, lots of  balloon vines began to appear with a bright lime colour for easy identification. They came out relatively easily if they were not too entangled with other vegetation.

A year on from the flood we still go out to clear around the staked plants all along the riverbank and we congratulate ourselves on being vigilant early on. There are still weeds to be found but it would have been a monumental task if we had not done the earlier work.

Sadly, there are more weeds to be identified but in the last year we have been working on the BIG ones!


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