Pomegranates grow in a pot inside a nursery may not conduct a bumper crop , but they can still bring forth a few yield if provided with the right growing conditions .
allot to theNorth Carolina State University Cooperative Extension , pomegranate Sir Herbert Beerbohm Tree ( Punica granatum ) grow best outdoors in USDA industrial plant hardiness zone 8b to 10a , although they also conform well to nursery cultivation .
farm pomegranates in a nursery is challenging , but it is the only choice for nurseryman in colder climates , and if done the right way , any feat will be honor with a craw of juicy - seed yield in fall .

Planting Pomegranates in a Greenhouse
With the specific challenges presented by greenhouse cultivation , it ’s important to start your Punica granatum off right by choose a proper pot size and providing optimum soil condition .
Selecting the Right Pot Size
Choosing the right - size pot is a vital part of memorise how to grow Punica granatum in pots . According toWilson Bros Gardens , a pomegranate that is 12 to 18 inch marvellous need a 1 - gallon passel . An 18- to 24 - inch - marvellous flora needs a 2 - gallon pot , and a 24- to 36 - inch plant needs a 3 - gallon container . A 5 - gallon Punica granatum tree bought from a greenhouse should be transplanted into a 10- to 20 - gallon crapper , and it will not necessitate to be repotted again .
The pot can be made of any material , but a lightweight composite or plastic pot will be lighter and easier to move once filled with soil . Whatever batch you opt , ensure it has several drain holes at the base so that piss can drain by .
Tip
Choosing a lightweight composite or plastic pot will make it easier to move once meet with territory .
Setting Up Ideal Soil Conditions
Punica granatum tolerate a range of a function of soil types as long as the soil is moderately fertile and tight - draining .
TheUniversity of Florida IFAS Extensionrecommends originate fruit tree in commercial potting soil or in a mixture of one part guts , one part barque or perlite and one part peat , although coir is a more sustainable choice than peat .
Do not habituate garden grime or reuse old potting grease for growing pomegranates in pots , because the filth can sometimes harbor harmful bacterium or insect eggs .
Growing a Greenhouse Pomegranate
heating plant , light and humidity are all important factor when develop a pomegranate in a glasshouse .
Monitoring Temperatures and Sun Exposure
Pomegranates need full - Lord’s Day exposure with some light midday shade in warmer climates , in particular in a glasshouse environment where temperatures can soar .
These brightness level - fuck Mediterranean trees perform best when temperatures stay above 85 ° F for 120 days each year , harmonise to theUniversity of Georgia Extension .
Nighttime temperatures must appease above 40 ° F for fruit to form , so adjust the greenhouse vents as take and conclude them entirely if temperatures are predicted to fall below freeze .
Keeping the Humidity Levels Up
pomegranate execute best when humidness is kept above 50 per centum , although they will tolerate lower levels without suffering serious legal injury .
pomegranate tree are self - pollinating and will develop fruit even when raise alone , but very high humidity can contribute to poor pollenation . It is best to launch the nursery vents for a few hours each day to free extra wet .
Things Needed
Caring for Pomegranates Grown in a Greenhouse
Punica granatum want very piffling care even when grown in a greenhouse environment .
Maintaining the Moisture at Optimum Levels
Check the wet stage in the grease every few daylight or every day during very red-hot weather . allow for water whenever the soil sense completely dry on the Earth’s surface , and then drench the soil until water drains from the bottom of the great deal .
Although pomegranate trees are drought - tolerant , too footling water will fall fruiting , so it is significant to never allow the soil get too dry out out . Likewise , too much soil moisture can cause root problems , so it is important to let the soil dry out in the top few inch between waterings .
Applying Fertilizer in the Spring
Pomegranates are normally not great feeders , but those grown in pots in a greenhouse welfare from abstemious plant food applications from bounce until harvest .
Logee ’s Plants for Home and Gardenrecommends feeding potted pomegranate with fluid 7 - 9 - 5 or 15 - 15 - 15 fertilizer at a pace of 1/2 teaspoon per gallon of H2O . utilize the fertilizer solution every two weeks and water well after feeding to circularise the fertilizer into the filth .