Today Rivers Trusts in North East Wales are holding a conference on the Management of Invasive Weeds in the River Dee catchment at Beaufort Park near Mold.

The Trusts are co-operating on a major programme to eradicate invasive weeds from three rivers catchments, the Dee, the Clwyd and the Conwy.

The project concentrates on three weeds in particular, Japanese Knotweed, Himalayan Balsam and Giant Hogweed. Left untreated, these species can spread at an alarming rate, smothering native wildlife.

Exploring Wales' wooded gorges and ravines is increasing in popularity amongst walkers, canoeists and extreme sport enthusiasts.

Now, there is a short film on the CCW YouTube Channel that highlights the natural wonders of gorges to help people learn about our celtic rainforests before they arrive.

Presented by naturalist Ray Woods, the ten-minute film reveals that gorges in Wales' ancient woodlands harbour hundreds of different kinds of mosses and liverworts, some of which are very rare throughout the world.

Aberglasney sure know how to attract attention. 'Sex in the garden!' they bellow, advertising their forthcoming event about plants' reproductive cycles like Carry On Up The Sporophyte.

But all this has a fascinating, and little-known, point. The way that plants reproduce is a mystery to many, and the Carmathenshire garden's director of operations Graham Rankin is keen to expose more about the secret life of plants in his care. Graham will take visitors through the mysteries of plant reproduction on 5 September, with tickets available through the garden's website.

We caught up with Graham to find out about his passion for this area of plant life and what people can expect from the event.

"The honest reason for doing this is frustration. Having spent thousands of pounds and countless hours buying the most beautiful plants available, most garden visitors appreciate the overall colour that flowers produce, but I doubt that more than 5% of visitors really take the trouble of stopping to admire their individual intricate beauty or fragrance and marvel at the fascinating ways they have evolved over millions of years to reproduce themselves. I have never been asked by a visitor how a certain plant reproduces, but I am sure if they knew they would find it fascinating.

"Many flowering plants produce highly visible inflorescences, which is one reason why we grow them, but some plants produce flowers that are highly inconspicuous or not visible at all without careful observation, but are still valuable in the garden.

"The pollination of flowers by wind, insect and bird will be covered and the evolutionary development of each, from primitive grasses and magnolias to the advanced animal-like mimicry of orchids. Other plants will include Ficus carica (the fig) and Aristolochia gigantea - the 'Duthchman's Pipe'.

Orchids are one of those things that are something of a mystery to UK residents, with a public perception of exotic rarities clinging to hillsides deep in the Amazon, fetching hundreds of pounds for a single bloom.

Well, think again because Welsh meadows are teeming with orchids and this weekend the RSPB is showing off up to six orchid species at its Newport Wetlands site. The annual Wetlands In Bloom guided walk will take in the pyramidal orchid, the southern marsh and the common spotted species. RSPB Wales say, "If we're lucky we may also see the amazing bee orchid".

See pictures of orchids in our BBC Wales Nature Flickr group.

Also over the summer months you can look out for other wildlife such martins, swifts, swallows and dragonflies darting past you on the paths and trails around the reserve.

More details: http://www.rspb.org.uk/events/details.asp?id=tcm:9-249159

One plant in particular is only found on Anglesey; this is the only place on earth where it is found, so be careful where you tread!

The plant in question is known as the 'spathulate fleawort' and is a rather plain yellow flower, not dissimilar to a tall daisy with yellow petals - I'm sure that will annoy botanists everywhere, so apologies!